diff --git a/intern/ghost/intern/GHOST_Window.h b/intern/ghost/intern/GHOST_Window.h
index 69d0eea838c..a3eb116780f 100644
--- a/intern/ghost/intern/GHOST_Window.h
+++ b/intern/ghost/intern/GHOST_Window.h
@@ -41,8 +41,8 @@ class GHOST_Window : public GHOST_IWindow {
    * Constructor.
    * Creates a new window and opens it.
    * To check if the window was created properly, use the getValid() method.
-   * \param width: The width the window.
-   * \param height: The height the window.
+   * \param width: The width of the window.
+   * \param height: The height of the window.
    * \param state: The state the window is initially opened with.
    * \param wantStereoVisual: Stereo visual for quad buffered stereo.
    * \param exclusive: Use to show the window ontop and ignore others (used full-screen).
diff --git a/intern/iksolver/intern/IK_QJacobian.cpp b/intern/iksolver/intern/IK_QJacobian.cpp
index 19d711f3fe1..7e4d48e37c9 100644
--- a/intern/iksolver/intern/IK_QJacobian.cpp
+++ b/intern/iksolver/intern/IK_QJacobian.cpp
@@ -196,12 +196,12 @@ void IK_QJacobian::InvertSDLS()
   // Compute the dampeds least squeares pseudo inverse of J.
   //
   // Since J is usually not invertible (most of the times it's not even
-  // square), the psuedo inverse is used. This gives us a least squares
+  // square), the pseudo inverse is used. This gives us a least squares
   // solution.
   //
   // This is fine when the J*Jt is of full rank. When J*Jt is near to
   // singular the least squares inverse tries to minimize |J(dtheta) - dX)|
-  // and doesn't try to minimize  dTheta. This results in eratic changes in
+  // and doesn't try to minimize  dTheta. This results in erratic changes in
   // angle. The damped least squares minimizes |dtheta| to try and reduce this
   // erratic behavior.
   //
@@ -323,7 +323,7 @@ void IK_QJacobian::InvertDLS()
   // least squares solution. This is fine when the m_jjt is
   // of full rank. When m_jjt is near to singular the least squares
   // inverse tries to minimize |J(dtheta) - dX)| and doesn't
-  // try to minimize  dTheta. This results in eratic changes in angle.
+  // try to minimize  dTheta. This results in erratic changes in angle.
   // Damped least squares minimizes |dtheta| to try and reduce this
   // erratic behavior.
 
diff --git a/intern/libmv/libmv/autotrack/autotrack.cc b/intern/libmv/libmv/autotrack/autotrack.cc
index afdf48912e5..a407639ecfa 100644
--- a/intern/libmv/libmv/autotrack/autotrack.cc
+++ b/intern/libmv/libmv/autotrack/autotrack.cc
@@ -178,7 +178,7 @@ bool AutoTrack::TrackMarker(Marker* tracked_marker,
     return false;
   }
 
-  // Store original position befoer tracking, so we can claculate offset later.
+  // Store original position before tracking, so we can claculate offset later.
   Vec2f original_center = tracked_marker->center;
 
   // Do the tracking!
diff --git a/intern/libmv/libmv/build/build_config.h b/intern/libmv/libmv/build/build_config.h
index 7029a36a7dd..1d87660f87c 100644
--- a/intern/libmv/libmv/build/build_config.h
+++ b/intern/libmv/libmv/build/build_config.h
@@ -239,7 +239,7 @@
 // Check what is the latest C++ specification the compiler supports.
 //
 // NOTE: Use explicit definition here to avoid expansion-to-defined warning from
-// being geenrated. While this will most likely a false-positive warning in this
+// being generated. While this will most likely a false-positive warning in this
 // particular case, that warning might be helpful to catch errors elsewhere.
 
 // C++11 check.
diff --git a/intern/libmv/libmv/image/tuple.h b/intern/libmv/libmv/image/tuple.h
index 447bf0cc81c..3f4b58886e4 100644
--- a/intern/libmv/libmv/image/tuple.h
+++ b/intern/libmv/libmv/image/tuple.h
@@ -25,7 +25,7 @@
 
 namespace libmv {
 
-// A vector of elements with fixed lenght and deep copy semantics.
+// A vector of elements with fixed length and deep copy semantics.
 template <typename T, int N>
 class Tuple {
  public:
diff --git a/intern/libmv/libmv/multiview/panography.h b/intern/libmv/libmv/multiview/panography.h
index 5860a34d1fd..6b87f25bdda 100644
--- a/intern/libmv/libmv/multiview/panography.h
+++ b/intern/libmv/libmv/multiview/panography.h
@@ -38,7 +38,7 @@ namespace libmv {
 // The 2-point algorithm solves for the rotation of the camera with a single
 // focal length (4 degrees of freedom).
 //
-// Compute from 1 to 3 possible focal lenght for 2 point correspondences.
+// Compute from 1 to 3 possible focal length for 2 point correspondences.
 // Suppose that the cameras share the same optical center and focal lengths:
 //
 //   Image 1 => H*x = x'  =>  Image 2
diff --git a/intern/libmv/libmv/numeric/numeric.h b/intern/libmv/libmv/numeric/numeric.h
index e3ebdb5a4bb..52f3b8d6a78 100644
--- a/intern/libmv/libmv/numeric/numeric.h
+++ b/intern/libmv/libmv/numeric/numeric.h
@@ -261,7 +261,7 @@ Mat3 RotationRodrigues(const Vec3& axis);
 // positive z-axis, and y is oriented close to up.
 Mat3 LookAt(Vec3 center);
 
-// Return a diagonal matrix from a vector containg the diagonal values.
+// Return a diagonal matrix from a vector containing the diagonal values.
 template <typename TVec>
 inline Mat Diag(const TVec& x) {
   return x.asDiagonal();
diff --git a/intern/libmv/libmv/numeric/poly.h b/intern/libmv/libmv/numeric/poly.h
index a3d3801a399..c1deee42bf9 100644
--- a/intern/libmv/libmv/numeric/poly.h
+++ b/intern/libmv/libmv/numeric/poly.h
@@ -50,7 +50,7 @@ int SolveCubicPolynomial(Real a, Real b, Real c, Real* x0, Real* x1, Real* x2) {
   Real CQ3 = 2916 * q * q * q;
 
   if (R == 0 && Q == 0) {
-    // Tripple root in one place.
+    // Triple root in one place.
     *x0 = *x1 = *x2 = -a / 3;
     return 3;
 
diff --git a/intern/memutil/MEM_RefCounted.h b/intern/memutil/MEM_RefCounted.h
index 319effdebaf..71be4b62f12 100644
--- a/intern/memutil/MEM_RefCounted.h
+++ b/intern/memutil/MEM_RefCounted.h
@@ -41,7 +41,7 @@
 class MEM_RefCounted {
  public:
   /**
-   * Constructs a a shared object.
+   * Constructs a shared object.
    */
   MEM_RefCounted() : m_refCount(1)
   {
diff --git a/intern/numaapi/source/build_config.h b/intern/numaapi/source/build_config.h
index e7c332483b5..58c07ac85ab 100644
--- a/intern/numaapi/source/build_config.h
+++ b/intern/numaapi/source/build_config.h
@@ -234,7 +234,7 @@
 // Check what is the latest C++ specification the compiler supports.
 //
 // NOTE: Use explicit definition here to avoid expansion-to-defined warning from
-// being geenrated. While this will most likely a false-positive warning in this
+// being generated. While this will most likely a false-positive warning in this
 // particular case, that warning might be helpful to catch errors elsewhere.
 
 // C++11 check.
diff --git a/intern/opencolorio/gpu_shader_display_transform.glsl b/intern/opencolorio/gpu_shader_display_transform.glsl
index d94ff9230e8..f5a7a7bf45d 100644
--- a/intern/opencolorio/gpu_shader_display_transform.glsl
+++ b/intern/opencolorio/gpu_shader_display_transform.glsl
@@ -119,7 +119,7 @@ vec4 curvemapping_evaluate_premulRGBF(vec4 col)
 
 /* Using a triangle distribution which gives a more final uniform noise.
  * See Banding in Games:A Noisy Rant(revision 5) Mikkel Gjøl, Playdead (slide 27) */
-/* GPUs are rounding before writting to framebuffer so we center the distribution around 0.0. */
+/* GPUs are rounding before writing to framebuffer so we center the distribution around 0.0. */
 /* Return triangle noise in [-1..1[ range */
 float dither_random_value(vec2 co)
 {
diff --git a/intern/opensubdiv/internal/topology/mesh_topology.cc b/intern/opensubdiv/internal/topology/mesh_topology.cc
index 29c387876ef..461a85fbdfb 100644
--- a/intern/opensubdiv/internal/topology/mesh_topology.cc
+++ b/intern/opensubdiv/internal/topology/mesh_topology.cc
@@ -183,7 +183,7 @@ void MeshTopology::setNumFaces(int num_faces)
   num_faces_ = num_faces;
 
   // NOTE: Extra element to store fake face past the last real one to make it
-  // possible to calculate number of verticies in the last face.
+  // possible to calculate number of vertices in the last face.
   faces_first_vertex_index_.resize(num_faces + 1, 0);
 }
 
diff --git a/intern/opensubdiv/internal/topology/mesh_topology.h b/intern/opensubdiv/internal/topology/mesh_topology.h
index 861614482ef..a2fad890d9d 100644
--- a/intern/opensubdiv/internal/topology/mesh_topology.h
+++ b/intern/opensubdiv/internal/topology/mesh_topology.h
@@ -111,7 +111,7 @@ class MeshTopology {
   // Pipeline related.
 
   // This function is to be called when number of vertices, edges, faces, and
-  // face-verticies are known.
+  // face-vertices are known.
   //
   // Usually is called from the end of topology refiner factory's
   // resizeComponentTopology().
@@ -162,7 +162,7 @@ class MeshTopology {
 
   int num_faces_;
 
-  // Continuous array of all verticies of all faces:
+  // Continuous array of all vertices of all faces:
   //  [vertex indices of face 0][vertex indices of face 1] .. [vertex indices of face n].
   vector<int> face_vertex_indices_;
 
diff --git a/intern/opensubdiv/opensubdiv_converter_capi.h b/intern/opensubdiv/opensubdiv_converter_capi.h
index 6f914a20bf5..164a6dfeb03 100644
--- a/intern/opensubdiv/opensubdiv_converter_capi.h
+++ b/intern/opensubdiv/opensubdiv_converter_capi.h
@@ -135,7 +135,7 @@ typedef struct OpenSubdiv_Converter {
   // specified in precalcUVLayer().
   int (*getNumUVCoordinates)(const struct OpenSubdiv_Converter *converter);
   // For the given face index and its corner (known as loop in Blender)
-  // get corrsponding UV coordinate index.
+  // get corresponding UV coordinate index.
   int (*getFaceCornerUVIndex)(const struct OpenSubdiv_Converter *converter,
                               const int face_index,
                               const int corner_index);
diff --git a/intern/utfconv/utfconv.c b/intern/utfconv/utfconv.c
index 00094b84042..673c567070c 100644
--- a/intern/utfconv/utfconv.c
+++ b/intern/utfconv/utfconv.c
@@ -56,7 +56,7 @@ size_t count_utf_8_from_16(const wchar_t *string16)
           }
           else {
             if (u < 0xE000) {
-              /*illigal*/;
+              /*illegal*/;
             }
             else {
               count += 3;