diff --git a/src/App/Link.cpp b/src/App/Link.cpp
index 471f90290e..84f74a2dd1 100644
--- a/src/App/Link.cpp
+++ b/src/App/Link.cpp
@@ -554,7 +554,7 @@ void LinkBaseExtension::syncCopyOnChange()
     // so the last object will be the copy of the original linked object
     auto newLinked = copiedObjs.back();
 
-    // We are coping from the original linked object and we've already mutated
+    // We are copying from the original linked object and we've already mutated
     // it, so we need to copy all CopyOnChange properties from the mutated
     // object to the new copy.
     std::vector<App::Property*> propList;
diff --git a/src/Base/Parameter.h b/src/Base/Parameter.h
index 62a84d2f2a..8aa2ae55d1 100644
--- a/src/Base/Parameter.h
+++ b/src/Base/Parameter.h
@@ -85,7 +85,7 @@ class ParameterManager;
  *  and exporting groups of parameters and enables streaming
  *  to a persistent medium via XML.
  *  \par
- *  Its main task is making user parameter persitent, saving
+ *  Its main task is making user parameter persistent, saving
  *  last used values in dialog boxes, setting and retrieving all
  *  kind of preferences and so on.
  *  @see ParameterManager
diff --git a/src/Base/RotationPy.xml b/src/Base/RotationPy.xml
index 972018408d..c6c0a4dca5 100644
--- a/src/Base/RotationPy.xml
+++ b/src/Base/RotationPy.xml
@@ -142,7 +142,7 @@ angle3 : float </UserDocu>
 			<Documentation>
 				<UserDocu>toEulerAngles(seq) -> list\n
 Get the Euler angles in a given sequence for this rotation.\n
-seq : str\n    Euler sequnce name. If not given, the function returns
+seq : str\n    Euler sequence name. If not given, the function returns
     all possible values of `seq`. Optional.</UserDocu>
 			</Documentation>
 		</Methode>
diff --git a/src/Mod/Part/Gui/SectionCutting.cpp b/src/Mod/Part/Gui/SectionCutting.cpp
index 31e4b99714..63da3803e9 100644
--- a/src/Mod/Part/Gui/SectionCutting.cpp
+++ b/src/Mod/Part/Gui/SectionCutting.cpp
@@ -107,7 +107,7 @@ SectionCut::SectionCut(QWidget* parent)
             ObjectsListVisible.push_back(*it);
     }
 
-    // lambda function to set color and transpareny
+    // lambda function to set color and transparency
     auto setColorTransparency = [&](Part::Box* pcBox) {
         App::Color cutColor;
         long cutTransparency;
@@ -531,7 +531,7 @@ void SectionCut::startCutting(bool isInitial)
         // hide the objects since only the cut should later be visible
         (*itCuts)->Visibility.setValue(false);
 
-        // check if all objects have same color and transparency
+        // check if all objects have same color and transparency
         if (ui->AutoCutfaceColor->isChecked()) {
             auto vpObject = dynamic_cast<Gui::ViewProviderGeometryObject*>(
                 Gui::Application::Instance->getViewProvider(*itCuts));
diff --git a/src/Mod/Part/Gui/SectionCutting.ui b/src/Mod/Part/Gui/SectionCutting.ui
index 45996a05ed..36a0c38d36 100644
--- a/src/Mod/Part/Gui/SectionCutting.ui
+++ b/src/Mod/Part/Gui/SectionCutting.ui
@@ -299,7 +299,7 @@
          </size>
         </property>
         <property name="toolTip">
-         <string>If checked, the color and transpareny
+         <string>If checked, the color and transparency
 will be taken from the cut objects.
 Works only if all objects have the same values.</string>
         </property>