diff --git a/drivers/unix/ip_unix.cpp b/drivers/unix/ip_unix.cpp
index d32592e81a..42b5bbfaf2 100644
--- a/drivers/unix/ip_unix.cpp
+++ b/drivers/unix/ip_unix.cpp
@@ -110,7 +110,7 @@ void IPUnix::_resolve_hostname(List<IPAddress> &r_addresses, const String &p_hos
 	struct addrinfo *next = result;
 
 	do {
-		if (next->ai_addr == NULL) {
+		if (next->ai_addr == nullptr) {
 			next = next->ai_next;
 			continue;
 		}
diff --git a/drivers/vulkan/vulkan_context.cpp b/drivers/vulkan/vulkan_context.cpp
index 152efc7807..44fed02f41 100644
--- a/drivers/vulkan/vulkan_context.cpp
+++ b/drivers/vulkan/vulkan_context.cpp
@@ -525,7 +525,7 @@ Error VulkanContext::_check_capabilities() {
 		// check our extended features
 		VkPhysicalDeviceMultiviewFeatures multiview_features;
 		multiview_features.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_MULTIVIEW_FEATURES;
-		multiview_features.pNext = NULL;
+		multiview_features.pNext = nullptr;
 
 		VkPhysicalDeviceFeatures2 device_features;
 		device_features.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_FEATURES_2;
diff --git a/modules/xatlas_unwrap/register_types.cpp b/modules/xatlas_unwrap/register_types.cpp
index 8913ef1b65..58a6216b1e 100644
--- a/modules/xatlas_unwrap/register_types.cpp
+++ b/modules/xatlas_unwrap/register_types.cpp
@@ -114,7 +114,7 @@ bool xatlas_mesh_lightmap_unwrap_callback(float p_texel_size, const float *p_ver
 		input_mesh.vertexPositionStride = sizeof(float) * 3;
 		input_mesh.vertexNormalData = p_normals;
 		input_mesh.vertexNormalStride = sizeof(uint32_t) * 3;
-		input_mesh.vertexUvData = NULL;
+		input_mesh.vertexUvData = nullptr;
 		input_mesh.vertexUvStride = 0;
 
 		xatlas::ChartOptions chart_options;
diff --git a/platform/osx/display_server_osx.mm b/platform/osx/display_server_osx.mm
index da6c45793a..3fe055a511 100644
--- a/platform/osx/display_server_osx.mm
+++ b/platform/osx/display_server_osx.mm
@@ -3014,7 +3014,7 @@ void DisplayServerOSX::cursor_set_custom_image(const RES &p_cursor, CursorShape
 		ERR_FAIL_COND(!image.is_valid());
 
 		NSBitmapImageRep *imgrep = [[NSBitmapImageRep alloc]
-				initWithBitmapDataPlanes:NULL
+				initWithBitmapDataPlanes:nullptr
 							  pixelsWide:int(texture_size.width)
 							  pixelsHigh:int(texture_size.height)
 						   bitsPerSample:8
@@ -3418,7 +3418,7 @@ void DisplayServerOSX::set_icon(const Ref<Image> &p_icon) {
 	img = img->duplicate();
 	img->convert(Image::FORMAT_RGBA8);
 	NSBitmapImageRep *imgrep = [[NSBitmapImageRep alloc]
-			initWithBitmapDataPlanes:NULL
+			initWithBitmapDataPlanes:nullptr
 						  pixelsWide:img->get_width()
 						  pixelsHigh:img->get_height()
 					   bitsPerSample:8
diff --git a/scene/resources/mesh.cpp b/scene/resources/mesh.cpp
index 18e6a51118..7ffe0b03e1 100644
--- a/scene/resources/mesh.cpp
+++ b/scene/resources/mesh.cpp
@@ -1577,7 +1577,7 @@ void ArrayMesh::regen_normal_maps() {
 }
 
 //dirty hack
-bool (*array_mesh_lightmap_unwrap_callback)(float p_texel_size, const float *p_vertices, const float *p_normals, int p_vertex_count, const int *p_indices, int p_index_count, const uint8_t *p_cache_data, bool *r_use_cache, uint8_t **r_mesh_cache, int *r_mesh_cache_size, float **r_uv, int **r_vertex, int *r_vertex_count, int **r_index, int *r_index_count, int *r_size_hint_x, int *r_size_hint_y) = NULL;
+bool (*array_mesh_lightmap_unwrap_callback)(float p_texel_size, const float *p_vertices, const float *p_normals, int p_vertex_count, const int *p_indices, int p_index_count, const uint8_t *p_cache_data, bool *r_use_cache, uint8_t **r_mesh_cache, int *r_mesh_cache_size, float **r_uv, int **r_vertex, int *r_vertex_count, int **r_index, int *r_index_count, int *r_size_hint_x, int *r_size_hint_y) = nullptr;
 
 struct ArrayMeshLightmapSurface {
 	Ref<Material> material;
diff --git a/servers/rendering/renderer_rd/renderer_storage_rd.cpp b/servers/rendering/renderer_rd/renderer_storage_rd.cpp
index 45d3b3f09f..1d46db5bbd 100644
--- a/servers/rendering/renderer_rd/renderer_storage_rd.cpp
+++ b/servers/rendering/renderer_rd/renderer_storage_rd.cpp
@@ -9970,6 +9970,6 @@ RendererStorageRD::~RendererStorageRD() {
 
 	if (effects) {
 		memdelete(effects);
-		effects = NULL;
+		effects = nullptr;
 	}
 }
diff --git a/servers/rendering/renderer_rd/renderer_storage_rd.h b/servers/rendering/renderer_rd/renderer_storage_rd.h
index d56afcc448..d6129bb57b 100644
--- a/servers/rendering/renderer_rd/renderer_storage_rd.h
+++ b/servers/rendering/renderer_rd/renderer_storage_rd.h
@@ -1284,7 +1284,7 @@ private:
 	void _update_global_variables();
 	/* EFFECTS */
 
-	EffectsRD *effects = NULL;
+	EffectsRD *effects = nullptr;
 
 public:
 	virtual bool can_create_resources_async() const;