diff --git a/intern/ghost/intern/GHOST_Context.cpp b/intern/ghost/intern/GHOST_Context.cpp
index dc040cc2c76..2f8ab7f8b9e 100644
--- a/intern/ghost/intern/GHOST_Context.cpp
+++ b/intern/ghost/intern/GHOST_Context.cpp
@@ -103,6 +103,9 @@ bool win32_chk(bool result, const char *file, int line, const char *text)
     _ftprintf(
         stderr, "%s:%d: [%s] -> Win32 Error# (%lu): %s", file, line, text, ulong(error), msg);
 #  else
+    (void)file;
+    (void)line;
+    (void)text;
     _ftprintf(stderr, "Win32 Error# (%lu): %s", ulong(error), msg);
 #  endif
 
diff --git a/intern/ghost/intern/GHOST_DropTargetWin32.cpp b/intern/ghost/intern/GHOST_DropTargetWin32.cpp
index 86483118b3d..a26377ca6d1 100644
--- a/intern/ghost/intern/GHOST_DropTargetWin32.cpp
+++ b/intern/ghost/intern/GHOST_DropTargetWin32.cpp
@@ -78,7 +78,7 @@ ULONG __stdcall GHOST_DropTargetWin32::Release(void)
  * Implementation of IDropTarget::DragEnter
  */
 HRESULT __stdcall GHOST_DropTargetWin32::DragEnter(IDataObject *p_data_object,
-                                                   DWORD grf_key_state,
+                                                   DWORD /*grf_key_state*/,
                                                    POINTL pt,
                                                    DWORD *pdw_effect)
 {
@@ -95,7 +95,7 @@ HRESULT __stdcall GHOST_DropTargetWin32::DragEnter(IDataObject *p_data_object,
 /*
  * Implementation of IDropTarget::DragOver
  */
-HRESULT __stdcall GHOST_DropTargetWin32::DragOver(DWORD grf_key_state,
+HRESULT __stdcall GHOST_DropTargetWin32::DragOver(DWORD /*grf_key_state*/,
                                                   POINTL pt,
                                                   DWORD *pdw_effect)
 {
@@ -128,7 +128,7 @@ HRESULT __stdcall GHOST_DropTargetWin32::DragLeave(void)
  * the implementation of IDropTarget::DragOver
  */
 HRESULT __stdcall GHOST_DropTargetWin32::Drop(IDataObject *p_data_object,
-                                              DWORD grf_key_state,
+                                              DWORD /*grf_key_state*/,
                                               POINTL pt,
                                               DWORD *pdw_effect)
 {
diff --git a/intern/ghost/intern/GHOST_ImeWin32.cpp b/intern/ghost/intern/GHOST_ImeWin32.cpp
index 780d93ac995..764a6a1e241 100644
--- a/intern/ghost/intern/GHOST_ImeWin32.cpp
+++ b/intern/ghost/intern/GHOST_ImeWin32.cpp
@@ -140,7 +140,7 @@ void GHOST_ImeWin32::SetImeWindowStyle(
   ::DefWindowProc(window_handle, message, wparam, lparam);
 }
 
-void GHOST_ImeWin32::DestroyImeWindow(HWND window_handle)
+void GHOST_ImeWin32::DestroyImeWindow(HWND /*window_handle*/)
 {
   /* Destroy the system caret if we have created for this IME input context. */
   if (system_caret_) {
@@ -149,7 +149,7 @@ void GHOST_ImeWin32::DestroyImeWindow(HWND window_handle)
   }
 }
 
-void GHOST_ImeWin32::MoveImeWindow(HWND window_handle, HIMC imm_context)
+void GHOST_ImeWin32::MoveImeWindow(HWND /*window_handle*/, HIMC imm_context)
 {
   int x = caret_rect_.m_l;
   int y = caret_rect_.m_t;
@@ -228,7 +228,7 @@ void GHOST_ImeWin32::CheckFirst(HWND window_handle)
   }
 }
 
-void GHOST_ImeWin32::ResetComposition(HWND window_handle)
+void GHOST_ImeWin32::ResetComposition(HWND /*window_handle*/)
 {
   /* Currently, just reset the composition status. */
   is_composing_ = false;
diff --git a/intern/ghost/intern/GHOST_SystemWin32.cpp b/intern/ghost/intern/GHOST_SystemWin32.cpp
index 2a9186ba1ae..eb67d16d06f 100644
--- a/intern/ghost/intern/GHOST_SystemWin32.cpp
+++ b/intern/ghost/intern/GHOST_SystemWin32.cpp
@@ -217,7 +217,7 @@ GHOST_IWindow *GHOST_SystemWin32::createWindow(const char *title,
                                                uint32_t height,
                                                GHOST_TWindowState state,
                                                GHOST_GLSettings glSettings,
-                                               const bool exclusive,
+                                               const bool /*exclusive*/,
                                                const bool is_dialog,
                                                const GHOST_IWindow *parentWindow)
 {
@@ -568,7 +568,7 @@ GHOST_TKey GHOST_SystemWin32::hardKey(RAWINPUT const &raw, bool *r_key_down)
  * This function was added in response to bug #25715.
  * This is going to be a long list #42426.
  */
-GHOST_TKey GHOST_SystemWin32::processSpecialKey(short vKey, short scanCode) const
+GHOST_TKey GHOST_SystemWin32::processSpecialKey(short vKey, short /*scanCode*/) const
 {
   GHOST_TKey key = GHOST_kKeyUnknown;
   if (vKey == 0xFF) {
@@ -1148,7 +1148,9 @@ GHOST_EventCursor *GHOST_SystemWin32::processCursorEvent(GHOST_WindowWin32 *wind
                                GHOST_TABLET_DATA_NONE);
 }
 
-void GHOST_SystemWin32::processWheelEvent(GHOST_WindowWin32 *window, WPARAM wParam, LPARAM lParam)
+void GHOST_SystemWin32::processWheelEvent(GHOST_WindowWin32 *window,
+                                          WPARAM wParam,
+                                          LPARAM /*lParam*/)
 {
   GHOST_SystemWin32 *system = (GHOST_SystemWin32 *)getSystem();
 
@@ -2213,7 +2215,7 @@ LRESULT WINAPI GHOST_SystemWin32::s_wndProc(HWND hwnd, uint msg, WPARAM wParam,
   return lResult;
 }
 
-char *GHOST_SystemWin32::getClipboard(bool selection) const
+char *GHOST_SystemWin32::getClipboard(bool /*selection*/) const
 {
   if (IsClipboardFormatAvailable(CF_UNICODETEXT) && OpenClipboard(NULL)) {
     wchar_t *buffer;
diff --git a/intern/ghost/intern/GHOST_TrackpadWin32.cpp b/intern/ghost/intern/GHOST_TrackpadWin32.cpp
index d5317f0f780..4d5ce6fabe1 100644
--- a/intern/ghost/intern/GHOST_TrackpadWin32.cpp
+++ b/intern/ghost/intern/GHOST_TrackpadWin32.cpp
@@ -265,14 +265,14 @@ HRESULT GHOST_DirectManipulationViewportEventHandler::OnViewportStatusChanged(
 }
 
 HRESULT GHOST_DirectManipulationViewportEventHandler::OnViewportUpdated(
-    IDirectManipulationViewport *viewport)
+    IDirectManipulationViewport * /*viewport*/)
 {
   /* Nothing to do here. */
   return S_OK;
 }
 
 HRESULT GHOST_DirectManipulationViewportEventHandler::OnContentUpdated(
-    IDirectManipulationViewport *viewport, IDirectManipulationContent *content)
+    IDirectManipulationViewport * /*viewport*/, IDirectManipulationContent *content)
 {
   float transform[6];
   HRESULT hr = content->GetContentTransform(transform, ARRAYSIZE(transform));
diff --git a/intern/ghost/intern/GHOST_WindowWin32.cpp b/intern/ghost/intern/GHOST_WindowWin32.cpp
index 3e82f55c583..06d9ea939e0 100644
--- a/intern/ghost/intern/GHOST_WindowWin32.cpp
+++ b/intern/ghost/intern/GHOST_WindowWin32.cpp
@@ -898,7 +898,7 @@ GHOST_TSuccess GHOST_WindowWin32::hasCursorShape(GHOST_TStandardCursor cursorSha
 }
 
 GHOST_TSuccess GHOST_WindowWin32::getPointerInfo(
-    std::vector<GHOST_PointerInfoWin32> &outPointerInfo, WPARAM wParam, LPARAM lParam)
+    std::vector<GHOST_PointerInfoWin32> &outPointerInfo, WPARAM wParam, LPARAM /*lParam*/)
 {
   int32_t pointerId = GET_POINTERID_WPARAM(wParam);
   int32_t isPrimary = IS_POINTER_PRIMARY_WPARAM(wParam);
@@ -1109,8 +1109,13 @@ static uint16_t uns16ReverseBits(uint16_t shrt)
 }
 #endif
 
-GHOST_TSuccess GHOST_WindowWin32::setWindowCustomCursorShape(
-    uint8_t *bitmap, uint8_t *mask, int sizeX, int sizeY, int hotX, int hotY, bool canInvertColor)
+GHOST_TSuccess GHOST_WindowWin32::setWindowCustomCursorShape(uint8_t *bitmap,
+                                                             uint8_t *mask,
+                                                             int sizeX,
+                                                             int sizeY,
+                                                             int hotX,
+                                                             int hotY,
+                                                             bool /*canInvertColor*/)
 {
   uint32_t andData[32];
   uint32_t xorData[32];
@@ -1175,7 +1180,7 @@ GHOST_TSuccess GHOST_WindowWin32::endProgressBar()
 }
 
 #ifdef WITH_INPUT_IME
-void GHOST_WindowWin32::beginIME(int32_t x, int32_t y, int32_t w, int32_t h, bool completed)
+void GHOST_WindowWin32::beginIME(int32_t x, int32_t y, int32_t /*w*/, int32_t h, bool completed)
 {
   m_imeInput.BeginIME(m_hWnd, GHOST_Rect(x, y - h, x, y), completed);
 }
diff --git a/source/blender/blenlib/intern/BLI_filelist.c b/source/blender/blenlib/intern/BLI_filelist.c
index 7dca60128d3..6240c855c99 100644
--- a/source/blender/blenlib/intern/BLI_filelist.c
+++ b/source/blender/blenlib/intern/BLI_filelist.c
@@ -272,6 +272,7 @@ void BLI_filelist_entry_mode_to_string(const struct stat *st,
   const char *types[8] = {"---", "--x", "-w-", "-wx", "r--", "r-x", "rw-", "rwx"};
 
 #ifdef WIN32
+  UNUSED_VARS(st);
   BLI_strncpy(r_mode1, types[0], sizeof(*r_mode1) * FILELIST_DIRENTRY_MODE_LEN);
   BLI_strncpy(r_mode2, types[0], sizeof(*r_mode2) * FILELIST_DIRENTRY_MODE_LEN);
   BLI_strncpy(r_mode3, types[0], sizeof(*r_mode3) * FILELIST_DIRENTRY_MODE_LEN);
@@ -315,6 +316,7 @@ void BLI_filelist_entry_owner_to_string(const struct stat *st,
                                         char r_owner[FILELIST_DIRENTRY_OWNER_LEN])
 {
 #ifdef WIN32
+  UNUSED_VARS(st);
   strcpy(r_owner, "unknown");
 #else
   struct passwd *pwuser = getpwuid(st->st_uid);
diff --git a/source/blender/bmesh/intern/bmesh_polygon_edgenet.c b/source/blender/bmesh/intern/bmesh_polygon_edgenet.c
index b4cfeb43c8f..de1ab723b9c 100644
--- a/source/blender/bmesh/intern/bmesh_polygon_edgenet.c
+++ b/source/blender/bmesh/intern/bmesh_polygon_edgenet.c
@@ -261,6 +261,8 @@ static bool bm_face_split_edgenet_find_loop_walk(BMVert *v_init,
                                                  const uint edge_order_len,
                                                  BMEdge *e_pair[2])
 {
+  UNUSED_VARS_NDEBUG(edge_order_len);
+
   /* fast-path for the common case (avoid push-pop).
    * Also avoids tagging as visited since we know we
    * can't reach these verts some other way */
diff --git a/source/blender/functions/FN_multi_function_builder.hh b/source/blender/functions/FN_multi_function_builder.hh
index b1996ac8f43..b94b04cd7e9 100644
--- a/source/blender/functions/FN_multi_function_builder.hh
+++ b/source/blender/functions/FN_multi_function_builder.hh
@@ -407,6 +407,9 @@ inline void execute_element_fn_as_multi_function(const ElementFn element_fn,
                         std::forward<decltype(args)>(args)...);
         });
   }
+  else {
+    UNUSED_VARS(exec_preset);
+  }
 
   /* If devirtualized execution was disabled or not possible, use a fallback method which is
    * slower but always works. */
diff --git a/source/creator/blender_launcher_win32.c b/source/creator/blender_launcher_win32.c
index 993efafb53d..49acc591487 100644
--- a/source/creator/blender_launcher_win32.c
+++ b/source/creator/blender_launcher_win32.c
@@ -55,6 +55,11 @@ BOOL LaunchedFromSteam()
 
 int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PWSTR pCmdLine, int nCmdShow)
 {
+  /* Silence unreferenced formal parameter warning. */
+  (void)hInstance;
+  (void)hPrevInstance;
+  (void)nCmdShow;
+
   STARTUPINFO siStartInfo = {0};
   PROCESS_INFORMATION procInfo;
   wchar_t path[MAX_PATH];
diff --git a/source/creator/creator.c b/source/creator/creator.c
index fe6d501164a..5d10d11a817 100644
--- a/source/creator/creator.c
+++ b/source/creator/creator.c
@@ -239,12 +239,12 @@ void *gmp_alloc(size_t size)
 {
   return scalable_malloc(size);
 }
-void *gmp_realloc(void *ptr, size_t old_size, size_t new_size)
+void *gmp_realloc(void *ptr, size_t UNUSED(old_size), size_t new_size)
 {
   return scalable_realloc(ptr, new_size);
 }
 
-void gmp_free(void *ptr, size_t size)
+void gmp_free(void *ptr, size_t UNUSED(size))
 {
   scalable_free(ptr);
 }