diff --git a/pcbnew/array_pad_number_provider.h b/pcbnew/array_pad_number_provider.h
index c96966cab9..0e8ea43c0a 100644
--- a/pcbnew/array_pad_number_provider.h
+++ b/pcbnew/array_pad_number_provider.h
@@ -37,7 +37,7 @@ class ARRAY_PAD_NUMBER_PROVIDER
 public:
     /**
      * @param aFootprint the footprint to gather existing numbers from (nullptr for no footprint)
-     * @oaram aArrayOpts the array options that provide the candidate numbers
+     * @param aArrayOpts the array options that provide the candidate numbers
      */
     ARRAY_PAD_NUMBER_PROVIDER( const FOOTPRINT* aFootprint, const ARRAY_OPTIONS& aArrayOpts );
 
diff --git a/pcbnew/board_item_container.h b/pcbnew/board_item_container.h
index b6bf00f82e..e454e4eed9 100644
--- a/pcbnew/board_item_container.h
+++ b/pcbnew/board_item_container.h
@@ -60,7 +60,7 @@ public:
     /**
      * @brief Adds an item to the container.
      * @param aMode decides whether the item is added in the beginning or at the end of the list.
-     * @param aSkipConnectivity skip connectivity update (usefull for file loading, when
+     * @param aSkipConnectivity skip connectivity update (useful for file loading, when
      * the connectivity is updated after end of loading).
      */
     virtual void Add( BOARD_ITEM* aItem, ADD_MODE aMode = ADD_MODE::INSERT,
diff --git a/pcbnew/board_stackup_manager/board_stackup.cpp b/pcbnew/board_stackup_manager/board_stackup.cpp
index cecb817762..5f1479cd80 100644
--- a/pcbnew/board_stackup_manager/board_stackup.cpp
+++ b/pcbnew/board_stackup_manager/board_stackup.cpp
@@ -466,7 +466,7 @@ bool BOARD_STACKUP::SynchronizeWithBoard( BOARD_DESIGN_SETTINGS* aSettings )
         }
     }
 
-    // Transfert layer settings:
+    // Transfer layer settings:
     *this = stackup;
 
     // Transfer other stackup settings from aSettings
diff --git a/pcbnew/dialogs/dialog_copper_zones.cpp b/pcbnew/dialogs/dialog_copper_zones.cpp
index 1634fc5ae7..23597b00cf 100644
--- a/pcbnew/dialogs/dialog_copper_zones.cpp
+++ b/pcbnew/dialogs/dialog_copper_zones.cpp
@@ -243,7 +243,7 @@ bool DIALOG_COPPER_ZONE::TransferDataToWindow()
     m_cornerRadius.SetValue( m_settings.GetCornerRadius() );
     m_PriorityLevelCtrl->SetValue( m_settings.m_ZonePriority );
 
-    if( m_isTeardrop )  // outlines are never smoothed: they have alreay the right shape
+    if( m_isTeardrop )  // outlines are never smoothed: they have already the right shape
     {
         m_cornerSmoothingChoice->SetSelection( 0 );
         m_cornerSmoothingChoice->Enable( false );
@@ -640,7 +640,7 @@ void DIALOG_COPPER_ZONE::OnNetSortingOptionSelected( wxCommandEvent& event )
 
 void DIALOG_COPPER_ZONE::storePersistentNetSortConfigurations()
 {
-    // These configurations are persistent across multiple invokations of
+    // These configurations are persistent across multiple invocations of
     // this dialog
     int newConfig{ NO_PERSISTENT_SORT_MODE };
 
diff --git a/pcbnew/dialogs/dialog_move_exact.cpp b/pcbnew/dialogs/dialog_move_exact.cpp
index ce4911a89b..4f5b640846 100644
--- a/pcbnew/dialogs/dialog_move_exact.cpp
+++ b/pcbnew/dialogs/dialog_move_exact.cpp
@@ -235,7 +235,7 @@ void DIALOG_MOVE_EXACT::OnClear( wxCommandEvent& event )
         m_rotate.SetAngleValue( ANGLE_0 );
     }
 
-    // Keep m_stdButtonsOK focused to allow enter key actiavte the OK button
+    // Keep m_stdButtonsOK focused to allow enter key activate the OK button
     m_stdButtonsOK->SetFocus();
 }
 
diff --git a/pcbnew/dialogs/dialog_pad_properties.cpp b/pcbnew/dialogs/dialog_pad_properties.cpp
index ae6af3f89f..b269e7f0a3 100644
--- a/pcbnew/dialogs/dialog_pad_properties.cpp
+++ b/pcbnew/dialogs/dialog_pad_properties.cpp
@@ -2130,7 +2130,7 @@ void DIALOG_PAD_PROPERTIES::editPrimitive()
 void DIALOG_PAD_PROPERTIES::OnPrimitiveSelection( wxListEvent& event )
 {
     // Called on a double click on the basic shapes list
-    // To Do: highligth the primitive(s) currently selected.
+    // To Do: highlight the primitive(s) currently selected.
     redraw();
 }
 
diff --git a/pcbnew/dialogs/dialog_target_properties.cpp b/pcbnew/dialogs/dialog_target_properties.cpp
index 2bc9be45c8..be8895a2d8 100644
--- a/pcbnew/dialogs/dialog_target_properties.cpp
+++ b/pcbnew/dialogs/dialog_target_properties.cpp
@@ -94,7 +94,7 @@ bool DIALOG_TARGET_PROPERTIES::TransferDataFromWindow()
     BOARD_COMMIT commit( m_Parent );
     commit.Modify( m_Target );
 
-    // Save old item in undo list, if is is not currently edited (will be later if so)
+    // Save old item in undo list, if it's not currently edited (will be later if so)
     bool pushCommit = ( m_Target->GetEditFlags() == 0 );
 
     if( m_Target->GetEditFlags() != 0 )         // other edit in progress (MOVE, NEW ..)
diff --git a/pcbnew/drc/drc_test_provider_library_parity.cpp b/pcbnew/drc/drc_test_provider_library_parity.cpp
index 50f85a1eb8..310b53d0b9 100644
--- a/pcbnew/drc/drc_test_provider_library_parity.cpp
+++ b/pcbnew/drc/drc_test_provider_library_parity.cpp
@@ -362,7 +362,7 @@ bool FOOTPRINT::FootprintNeedsUpdate( const FOOTPRINT* aLibFootprint )
     // changed for instances on the board.  Or they might want to be tested for equality.
     // Currently we punt and ignore all the text items.
 
-    // Drawings and pads are also somewhat problematic as there's no gaurantee that they'll be
+    // Drawings and pads are also somewhat problematic as there's no guarantee that they'll be
     // in the same order in the two footprints.  Rather than building some sophisticated hashing
     // algorithm we use the footprint sorting functions to attempt to sort them in the same order.
 
diff --git a/pcbnew/exporters/exporter_vrml.cpp b/pcbnew/exporters/exporter_vrml.cpp
index 14bda9c71a..685c344e45 100644
--- a/pcbnew/exporters/exporter_vrml.cpp
+++ b/pcbnew/exporters/exporter_vrml.cpp
@@ -264,7 +264,7 @@ EXPORTER_PCB_VRML::~EXPORTER_PCB_VRML()
 void EXPORTER_PCB_VRML::initStaticColorList()
 {
     // Initialize the list of colors used in VRML export, but only once.
-    // (The list is stati
+    // (The list is static)
     if( g_ColorsLoaded )
         return;
 
diff --git a/pcbnew/exporters/gen_drill_report_files.cpp b/pcbnew/exporters/gen_drill_report_files.cpp
index c0281608be..7d54839b95 100644
--- a/pcbnew/exporters/gen_drill_report_files.cpp
+++ b/pcbnew/exporters/gen_drill_report_files.cpp
@@ -191,7 +191,7 @@ bool GENDRILL_WRITER_BASE::genDrillMapFile( const wxString& aFullFileName, PLOT_
         GERBER_PLOTTER* gbrplotter = static_cast <GERBER_PLOTTER*> ( plotter );
         gbrplotter->DisableApertMacros( false );
         gbrplotter->UseX2format( true );            // Mandatory
-        gbrplotter->UseX2NetAttributes( false );    // net attributes hace no meaning here
+        gbrplotter->UseX2NetAttributes( false );    // net attributes have no meaning here
 
         // Attributes are added using X2 format
         AddGerberX2Header( gbrplotter, m_pcb, false );
diff --git a/pcbnew/footprint.h b/pcbnew/footprint.h
index 9ffce5cb65..0bbd50226e 100644
--- a/pcbnew/footprint.h
+++ b/pcbnew/footprint.h
@@ -142,7 +142,7 @@ public:
     void ClearAllNets();
 
     /**
-     * Old footprints do not alway have a valid UUID (some can be set to null uuid)
+     * Old footprints do not always have a valid UUID (some can be set to null uuid)
      * However null UUIDs, having a special meaning in editor, create issues when
      * editing a footprint
      * So all null uuids a re replaced by a valid uuid
diff --git a/pcbnew/footprint_edit_frame.cpp b/pcbnew/footprint_edit_frame.cpp
index ed5221ef88..9afdd2ccb8 100644
--- a/pcbnew/footprint_edit_frame.cpp
+++ b/pcbnew/footprint_edit_frame.cpp
@@ -481,7 +481,7 @@ void FOOTPRINT_EDIT_FRAME::AddFootprintToBoard( FOOTPRINT* aFootprint )
     m_footprintNameWhenLoaded = aFootprint->GetFPID().GetLibItemName();
 
     PCB_BASE_EDIT_FRAME::AddFootprintToBoard( aFootprint );
-    // Ensure item UUIDs are valide
+    // Ensure item UUIDs are valid
     // ("old" footprints can have null uuids that create issues in fp editor)
     aFootprint->FixUuids();
 
diff --git a/pcbnew/ibis/ibis_parser.cpp b/pcbnew/ibis/ibis_parser.cpp
index 642d164627..56f515cff1 100644
--- a/pcbnew/ibis/ibis_parser.cpp
+++ b/pcbnew/ibis/ibis_parser.cpp
@@ -56,7 +56,7 @@ bool IBIS_MATRIX_BANDED::Check()
 
     if( m_bandwidth < 1 )
     {
-        Report( _( "Bandwith of banded matrices should be >= 1." ), RPT_SEVERITY_ERROR );
+        Report( _( "Bandwidth of banded matrices should be >= 1." ), RPT_SEVERITY_ERROR );
         status = false;
     }
 
diff --git a/pcbnew/ibis/ibis_parser.h b/pcbnew/ibis/ibis_parser.h
index f4b7759a97..21ebdcf605 100644
--- a/pcbnew/ibis/ibis_parser.h
+++ b/pcbnew/ibis/ibis_parser.h
@@ -118,7 +118,7 @@ enum class IBIS_MATRIX_TYPE
 {
     // All matrices are supposed to be symmetrical, only upper right triangle is given
     UNDEFINED,
-    BANDED, // Give the main diagonal + [bandwith] elements on the right
+    BANDED, // Give the main diagonal + [bandwidth] elements on the right
     SPARSE, // Only give non-zero values.
     FULL,   // Give the whole upper triangle.
 };
diff --git a/pcbnew/import_gfx/graphics_importer_buffer.cpp b/pcbnew/import_gfx/graphics_importer_buffer.cpp
index 468d779571..a9910cb3a3 100644
--- a/pcbnew/import_gfx/graphics_importer_buffer.cpp
+++ b/pcbnew/import_gfx/graphics_importer_buffer.cpp
@@ -105,7 +105,7 @@ static void convertPolygon( std::list<std::unique_ptr<IMPORTED_SHAPE>>& aShapes,
     double maxY = maxX;
 
     // as Clipper/SHAPE_POLY_SET uses ints we first need to upscale to a reasonably large size (in integer coordinates)
-    // to avoid loosing accuracy
+    // to avoid losing accuracy
     const double convert_scale = 1000000000.0;
 
     for( IMPORTED_POLYGON* path : aPaths )
diff --git a/pcbnew/pcb_shape.h b/pcbnew/pcb_shape.h
index d995b161ed..947982435a 100644
--- a/pcbnew/pcb_shape.h
+++ b/pcbnew/pcb_shape.h
@@ -138,7 +138,7 @@ public:
      * @param aCornerBuffer is a buffer to store the polygon.
      * @param aClearanceValue is the clearance around the pad.
      * @param aError is the maximum deviation from a true arc.
-     * @param aErrorLoc whether any approximation error shoule be placed inside or outside
+     * @param aErrorLoc whether any approximation error should be placed inside or outside
      * @param ignoreLineWidth is used for edge cut items where the line width is only
      *        for visualization
      */
diff --git a/pcbnew/pcb_target.h b/pcbnew/pcb_target.h
index cf41c1f876..9190c2407e 100644
--- a/pcbnew/pcb_target.h
+++ b/pcbnew/pcb_target.h
@@ -105,7 +105,7 @@ public:
      * @param aCornerBuffer is a buffer to store the polygon.
      * @param aClearanceValue is the clearance around the pad.
      * @param aError is the maximum deviation from a true arc.
-     * @param aErrorLoc whether any approximation error shoule be placed inside or outside
+     * @param aErrorLoc whether any approximation error should be placed inside or outside
      * @param ignoreLineWidth is used for edge cut items where the line width is only
      *        for visualization
      */
diff --git a/pcbnew/plugins/cadstar/cadstar_pcb_archive_loader.cpp b/pcbnew/plugins/cadstar/cadstar_pcb_archive_loader.cpp
index 4762fa0e96..1e94683d78 100644
--- a/pcbnew/plugins/cadstar/cadstar_pcb_archive_loader.cpp
+++ b/pcbnew/plugins/cadstar/cadstar_pcb_archive_loader.cpp
@@ -3759,7 +3759,7 @@ bool CADSTAR_PCB_ARCHIVE_LOADER::calculateZonePriorities( PCB_LAYER_ID& aLayer )
             {
                 // Test if this zone were lower priority than other zone, what is the error?
                 double areaThis = errorArea( thisZone, otherZone );
-                // Viceversa
+                // Vice-versa
                 double areaOther = errorArea( otherZone, thisZone );
 
                 if( areaThis > areaOther )
diff --git a/pcbnew/plugins/kicad/pcb_parser.h b/pcbnew/plugins/kicad/pcb_parser.h
index f022f09b71..e50fba4e29 100644
--- a/pcbnew/plugins/kicad/pcb_parser.h
+++ b/pcbnew/plugins/kicad/pcb_parser.h
@@ -114,7 +114,7 @@ public:
 
 private:
     ///< Convert net code using the mapping table if available,
-    ///< otherwise returns unchanged net code if < 0 or if is is out of range
+    ///< otherwise returns unchanged net code if < 0 or if it's out of range
     inline int getNetCode( int aNetCode )
     {
         if( ( aNetCode >= 0 ) && ( aNetCode < (int) m_netCodes.size() ) )
diff --git a/pcbnew/plugins/kicad/pcb_plugin.h b/pcbnew/plugins/kicad/pcb_plugin.h
index a6cff10490..fdc6d84c9b 100644
--- a/pcbnew/plugins/kicad/pcb_plugin.h
+++ b/pcbnew/plugins/kicad/pcb_plugin.h
@@ -132,7 +132,7 @@ class SHAPE_LINE_CHAIN;
 #define CTL_OMIT_INITIAL_COMMENTS   (1 << 3)    ///< omit FOOTPRINT initial comments
 #define CTL_OMIT_PATH               (1 << 4)    ///< Omit component sheet time stamp (useless in library)
 #define CTL_OMIT_AT                 (1 << 5)    ///< Omit position and rotation. (always saved
-                                                ///< with potion 0,0 and rotation = 0 in library).
+                                                ///< with position 0,0 and rotation = 0 in library).
 //#define CTL_OMIT_HIDE             (1 << 6)    // found and defined in eda_text.h
 #define CTL_OMIT_LIBNAME            (1 << 7)    ///< Omit lib alias when saving (used for
                                                 ///< board/not library).
diff --git a/pcbnew/python/plugins/FootprintWizardBase.py b/pcbnew/python/plugins/FootprintWizardBase.py
index de2002e9d3..51eebb0d93 100644
--- a/pcbnew/python/plugins/FootprintWizardBase.py
+++ b/pcbnew/python/plugins/FootprintWizardBase.py
@@ -454,7 +454,7 @@ class FootprintWizardDrawingAids:
     def SetLineTickness(self, lineThickness):
         """!
         Old version of SetLineThickness.
-        Does the same thing, but is is only here for compatibility with old
+        Does the same thing, but is only here for compatibility with old
         scripts.
         Set the current pen lineThickness used for subsequent drawing
         operations
diff --git a/pcbnew/python/scripting/pcb_scripting_tool.h b/pcbnew/python/scripting/pcb_scripting_tool.h
index a5007f80e0..acbb2e43d0 100644
--- a/pcbnew/python/scripting/pcb_scripting_tool.h
+++ b/pcbnew/python/scripting/pcb_scripting_tool.h
@@ -52,7 +52,7 @@ private:
     ///< Reload Python plugins and reset toolbar (if in pcbnew)
     int reloadPlugins( const TOOL_EVENT& aEvent );
 
-    ///< Call LoadPlugins method of the scripting module with apropriate paths
+    ///< Call LoadPlugins method of the scripting module with appropriate paths
     ///< Must be called under PyLOCK
     static void callLoadPlugins();
 
diff --git a/pcbnew/python/swig/units.i b/pcbnew/python/swig/units.i
index 59bb0450ef..664dde14ac 100644
--- a/pcbnew/python/swig/units.i
+++ b/pcbnew/python/swig/units.i
@@ -37,7 +37,7 @@
         elif type(iu) in [wxPoint,wxSize,VECTOR2I]:
             return tuple(map(ToMM,iu))
         else:
-            raise TypeError("ToMM() excpects int, float, wxPoint, wxSize or VECTOR2I, instead got type " + str(type(iu)))
+            raise TypeError("ToMM() expects int, float, wxPoint, wxSize or VECTOR2I, instead got type " + str(type(iu)))
 
     def FromMM(mm):
         if type(mm) in [int,float]:
@@ -53,7 +53,7 @@
         elif type(iu) in [wxPoint,wxSize,VECTOR2I]:
             return tuple(map(ToMils,iu))
         else:
-            raise TypeError("ToMils() excpects int, float, wxPoint, wxSize or VECTOR2I, instead got type " + str(type(iu)))
+            raise TypeError("ToMils() expects int, float, wxPoint, wxSize or VECTOR2I, instead got type " + str(type(iu)))
 
     def FromMils(mils):
         if type(mils) in [int,float]:
@@ -61,7 +61,7 @@
         elif type(mils) in [wxPoint,wxSize,VECTOR2I]:
             return tuple(map(FromMils,mils))
         else:
-            raise TypeError("FromMils() excpects int, float, wxPoint, wxSize or VECTOR2I, instead got type " + str(type(mils)))
+            raise TypeError("FromMils() expects int, float, wxPoint, wxSize or VECTOR2I, instead got type " + str(type(mils)))
 
     def PutOnGridMM(value, gridSizeMM):
         thresh = FromMM(gridSizeMM)
diff --git a/pcbnew/specctra_import_export/specctra.h b/pcbnew/specctra_import_export/specctra.h
index fccc2cd715..0af8b539ed 100644
--- a/pcbnew/specctra_import_export/specctra.h
+++ b/pcbnew/specctra_import_export/specctra.h
@@ -1127,7 +1127,7 @@ class CLASS_CLASS : public ELEM_HOLDER
 public:
 
     /**
-     * @param aParent is the arent element of the object.
+     * @param aParent is the parent element of the object.
      * @param aType May be either T_class_class or T_region_class_class
      */
     CLASS_CLASS( ELEM* aParent, DSN_T aType ) :
diff --git a/pcbnew/specctra_import_export/specctra_export.cpp b/pcbnew/specctra_import_export/specctra_export.cpp
index e8c4acd4cd..a372500713 100644
--- a/pcbnew/specctra_import_export/specctra_export.cpp
+++ b/pcbnew/specctra_import_export/specctra_export.cpp
@@ -1696,7 +1696,7 @@ void SPECCTRA_DB::FromBOARD( BOARD* aBoard )
                 wire->net_id = netname;
 
                 if( track->IsLocked() )
-                    wire->wire_type = T_fix;    // tracks with fix property are not returnned in .ses files
+                    wire->wire_type = T_fix;    // tracks with fix property are not returned in .ses files
                 else
                     wire->wire_type = T_route;  // could be T_protect
 
@@ -1758,7 +1758,7 @@ void SPECCTRA_DB::FromBOARD( BOARD* aBoard )
             dsnVia->net_id = TO_UTF8( net->GetNetname() );
 
             if( via->IsLocked() )
-                dsnVia->via_type = T_fix;    // vias with fix property are not returnned in .ses files
+                dsnVia->via_type = T_fix;    // vias with fix property are not returned in .ses files
             else
                 dsnVia->via_type = T_route;  // could be T_protect
         }
diff --git a/pcbnew/specctra_import_export/specctra_import.cpp b/pcbnew/specctra_import_export/specctra_import.cpp
index 7ccef09fde..7ecc6fbd43 100644
--- a/pcbnew/specctra_import_export/specctra_import.cpp
+++ b/pcbnew/specctra_import_export/specctra_import.cpp
@@ -93,7 +93,7 @@ bool PCB_EDIT_FRAME::ImportSpecctraSession( const wxString& fullFileName )
         // Update footprint positions
         GetCanvas()->GetView()->RecacheAllItems();
 
-        // add imported tracks (previous tracks are removed, therfore all are new)
+        // add imported tracks (previous tracks are removed, therefore all are new)
         for( auto track : GetBoard()->Tracks() )
             GetCanvas()->GetView()->Add( track );
    }
diff --git a/pcbnew/teardrop/teardrop.cpp b/pcbnew/teardrop/teardrop.cpp
index 1886d51087..1c11e608c5 100644
--- a/pcbnew/teardrop/teardrop.cpp
+++ b/pcbnew/teardrop/teardrop.cpp
@@ -77,7 +77,7 @@ ZONE* TEARDROP_MANAGER::createTeardrop( TEARDROP_VARIANT aTeardropVariant,
     for( VECTOR2I pt: aPoints )
         outline->Append(pt.x, pt.y);
 
-    // Can be usefull:
+    // Can be useful:
     teardrop->CalculateFilledArea();
 
     return teardrop;
@@ -335,7 +335,7 @@ int TEARDROP_MANAGER::addTeardropsOnTracks( BOARD_COMMIT* aCommitter )
 
             for( unsigned jj = ii+1; jj < sublist->size(); jj++ )
             {
-                // Seach candidates with thickness > curr thickness
+                // Search candidates with thickness > curr thickness
                 PCB_TRACK* candidate = (*sublist)[jj];
 
                 if( min_width >= candidate->GetWidth() )
diff --git a/pcbnew/teardrop/teardrop.h b/pcbnew/teardrop/teardrop.h
index e46f4fa129..06868a0fff 100644
--- a/pcbnew/teardrop/teardrop.h
+++ b/pcbnew/teardrop/teardrop.h
@@ -247,7 +247,7 @@ private:
     int     m_tolerance;                // max distance between a track end point and a pad/via center to
                                         // see them connected to ut a teardrop
     BOARD*  m_board;
-    TEARDROP_PARAMETERS_LIST* m_prmsList; // the teardrop parameters list, from the board desing settings
+    TEARDROP_PARAMETERS_LIST* m_prmsList; // the teardrop parameters list, from the board design settings
     std::vector<ZONE*> m_createdTdList; // list of new created teardrops
 };
 
diff --git a/pcbnew/teardrop/teardrop_utils.cpp b/pcbnew/teardrop/teardrop_utils.cpp
index 68c1d8ff11..fa14bdc71d 100644
--- a/pcbnew/teardrop/teardrop_utils.cpp
+++ b/pcbnew/teardrop/teardrop_utils.cpp
@@ -410,7 +410,7 @@ bool TEARDROP_MANAGER::ComputePointsOnPadVia( TEARDROP_PARAMETERS* aCurrParams,
                                                          : nullptr;
     SHAPE_POLY_SET c_buffer;
 
-    // aHeightRatio is the factor to calculate the aViaPad teardrop prefered height
+    // aHeightRatio is the factor to calculate the aViaPad teardrop preferred height
     // teardrop height = aViaPad size * aHeightRatio (aHeightRatio <= 1.0)
     // For rectangular (and similar) shapes, the preferred_height is calculated from the min
     // dim of the rectangle = aViaPad.m_Width
@@ -418,7 +418,7 @@ bool TEARDROP_MANAGER::ComputePointsOnPadVia( TEARDROP_PARAMETERS* aCurrParams,
     int preferred_height = aViaPad.m_Width * aCurrParams->m_HeightRatio;
 
     // force_clip_shape = true to force the via/pad polygon to be clipped to follow
-    // contraints
+    // constraints
     // Clipping is also needed for rectangular shapes, because the teardrop shape is
     // restricted to a polygonal area smaller than the pad area (the teardrop height
     // use the smaller value of X and Y sizes).
@@ -543,7 +543,7 @@ bool TEARDROP_MANAGER::ComputePointsOnPadVia( TEARDROP_PARAMETERS* aCurrParams,
         }
     }
 
-    if( found_start < 0 )   // PointE was not initalized, because start point does not exit
+    if( found_start < 0 )   // PointE was not initialized, because start point does not exit
     {
         int ii = found_end-1;
 
@@ -553,7 +553,7 @@ bool TEARDROP_MANAGER::ComputePointsOnPadVia( TEARDROP_PARAMETERS* aCurrParams,
         PointE = hull[ii];
     }
 
-    if( found_end < 0 )   // PointC was not initalized, because end point does not exit
+    if( found_end < 0 )   // PointC was not initialized, because end point does not exit
     {
         int ii = found_start-1;
 
@@ -692,7 +692,7 @@ bool TEARDROP_MANAGER::computeTeardropPolygonPoints( TEARDROP_PARAMETERS* aCurrP
     int track_stub_len;     // the dist between the start point and the anchor point
                             // on the track
 
-    // Note: aTrack can be modified if the inital track is too short
+    // Note: aTrack can be modified if the initial track is too short
     if( !findAnchorPointsOnTrack( aCurrParams, start, end, aTrack, aViaPad, &track_stub_len,
                                   aFollowTracks, aTrackLookupList ) )
         return false;
diff --git a/pcbnew/toolbars_footprint_viewer.cpp b/pcbnew/toolbars_footprint_viewer.cpp
index f0eb4adb9b..5faab2fbdc 100644
--- a/pcbnew/toolbars_footprint_viewer.cpp
+++ b/pcbnew/toolbars_footprint_viewer.cpp
@@ -101,7 +101,7 @@ void FOOTPRINT_VIEWER_FRAME::ReCreateHToolbar()
     UpdateZoomSelectBox();
     m_mainToolBar->AddControl( m_zoomSelectBox );
 
-    // Option to run Zoom automatique on footprint selection changge
+    // Option to run Zoom automatique on footprint selection change
     m_mainToolBar->AddTool( ID_FPVIEWER_AUTOZOOM_TOOL, wxEmptyString,
                             KiScaledBitmap( BITMAPS::zoom_auto_fit_in_page, this ),
                             _( "Automatic Zoom on footprint change" ),
diff --git a/pcbnew/tools/drawing_tool.h b/pcbnew/tools/drawing_tool.h
index 29aa44cec1..138d586eab 100644
--- a/pcbnew/tools/drawing_tool.h
+++ b/pcbnew/tools/drawing_tool.h
@@ -195,7 +195,7 @@ public:
     int SetAnchor( const TOOL_EVENT& aEvent );
 
     /**
-     * Toggle the horizontal/veritcal/45-degree constraint for drawing tools.
+     * Toggle the horizontal/vertical/45-degree constraint for drawing tools.
      */
     int ToggleHV45Mode( const TOOL_EVENT& toolEvent );
 
diff --git a/pcbnew/tools/pcb_selection_tool.cpp b/pcbnew/tools/pcb_selection_tool.cpp
index d227665908..9dd88ca910 100644
--- a/pcbnew/tools/pcb_selection_tool.cpp
+++ b/pcbnew/tools/pcb_selection_tool.cpp
@@ -1845,7 +1845,7 @@ void PCB_SELECTION_TOOL::FindItem( BOARD_ITEM* aItem )
             m_frame->FocusOnLocation( aItem->GetPosition() );
         }
 
-        // If the item has a bouding box, then zoom out if needed
+        // If the item has a bounding box, then zoom out if needed
         if( aItem->GetBoundingBox().GetHeight() > 0 && aItem->GetBoundingBox().GetWidth() > 0 )
         {
             // This adds some margin
@@ -1876,7 +1876,7 @@ void PCB_SELECTION_TOOL::FindItem( BOARD_ITEM* aItem )
                 {
                     pcbView->SetScale( pcbView->GetScale() * ( scale ) );
 
-                    //Let's refocus because there is an algortihm to avoid dialogs in there.
+                    //Let's refocus because there is an algorithm to avoid dialogs in there.
                     m_frame->FocusOnLocation( aItem->GetCenter() );
                 }
             }
diff --git a/pcbnew/tracks_cleaner.cpp b/pcbnew/tracks_cleaner.cpp
index 22f713b72c..9a444265b4 100644
--- a/pcbnew/tracks_cleaner.cpp
+++ b/pcbnew/tracks_cleaner.cpp
@@ -659,7 +659,7 @@ bool TRACKS_CLEANER::mergeCollinearSegments( PCB_TRACK* aSeg1, PCB_TRACK* aSeg2
 
     // If the existing connected points are not the same as the points generated by our
     // min/max alg, then assign the missing points to the end closest.  This ensures that
-    // our replacment track is still connected
+    // our replacement track is still connected
     for( auto pt : pts )
     {
         if( !dummy_seg.IsPointOnEnds( wxPoint( pt.x, pt.y ) ) )
diff --git a/pcbnew/zone.cpp b/pcbnew/zone.cpp
index 5e23464c25..8648625386 100644
--- a/pcbnew/zone.cpp
+++ b/pcbnew/zone.cpp
@@ -748,7 +748,7 @@ bool ZONE::AppendCorner( VECTOR2I aPosition, int aHoleIdx, bool aAllowDuplicatio
 
     // If aHoleIdx >= 0, the corner musty be added to the hole, index aHoleIdx.
     // (remember: the index of the first hole is 0)
-    // Return error if if does dot exist.
+    // Return error if it does not exist.
     if( aHoleIdx >= m_Poly->HoleCount( 0 ) )
         return false;
 
diff --git a/pcbnew/zone.h b/pcbnew/zone.h
index 3dde8f6038..649f501cc0 100644
--- a/pcbnew/zone.h
+++ b/pcbnew/zone.h
@@ -839,7 +839,7 @@ protected:
     bool m_isRuleArea;
 
     /* A zone outline can be a teardrop zone with different rules for priority
-     * (alway bigger priority than copper zones) and never removed from a
+     * (always bigger priority than copper zones) and never removed from a
      * copper zone having the same netcode
      */
     TEARDROP_TYPE m_teardropType;