diff --git a/core/variant/variant_op.cpp b/core/variant/variant_op.cpp
index 33c285dc6d0..aed83ac010d 100644
--- a/core/variant/variant_op.cpp
+++ b/core/variant/variant_op.cpp
@@ -900,6 +900,39 @@ void Variant::_register_variant_operators() {
 	register_op<OperatorEvaluatorNotInt>(Variant::OP_NOT, Variant::INT, Variant::NIL);
 	register_op<OperatorEvaluatorNotFloat>(Variant::OP_NOT, Variant::FLOAT, Variant::NIL);
 	register_op<OperatorEvaluatorNotObject>(Variant::OP_NOT, Variant::OBJECT, Variant::NIL);
+	register_op<OperatorEvaluatorNot<String>>(Variant::OP_NOT, Variant::STRING, Variant::NIL);
+	register_op<OperatorEvaluatorNot<Vector2>>(Variant::OP_NOT, Variant::VECTOR2, Variant::NIL);
+	register_op<OperatorEvaluatorNot<Vector2i>>(Variant::OP_NOT, Variant::VECTOR2I, Variant::NIL);
+	register_op<OperatorEvaluatorNot<Rect2>>(Variant::OP_NOT, Variant::RECT2, Variant::NIL);
+	register_op<OperatorEvaluatorNot<Rect2i>>(Variant::OP_NOT, Variant::RECT2I, Variant::NIL);
+	register_op<OperatorEvaluatorNot<Vector3>>(Variant::OP_NOT, Variant::VECTOR3, Variant::NIL);
+	register_op<OperatorEvaluatorNot<Vector3i>>(Variant::OP_NOT, Variant::VECTOR3I, Variant::NIL);
+	register_op<OperatorEvaluatorNot<Transform2D>>(Variant::OP_NOT, Variant::TRANSFORM2D, Variant::NIL);
+	register_op<OperatorEvaluatorNot<Vector4>>(Variant::OP_NOT, Variant::VECTOR4, Variant::NIL);
+	register_op<OperatorEvaluatorNot<Vector4i>>(Variant::OP_NOT, Variant::VECTOR4I, Variant::NIL);
+	register_op<OperatorEvaluatorNot<Plane>>(Variant::OP_NOT, Variant::PLANE, Variant::NIL);
+	register_op<OperatorEvaluatorNot<Quaternion>>(Variant::OP_NOT, Variant::QUATERNION, Variant::NIL);
+	register_op<OperatorEvaluatorNot<::AABB>>(Variant::OP_NOT, Variant::AABB, Variant::NIL);
+	register_op<OperatorEvaluatorNot<Basis>>(Variant::OP_NOT, Variant::BASIS, Variant::NIL);
+	register_op<OperatorEvaluatorNot<Transform3D>>(Variant::OP_NOT, Variant::TRANSFORM3D, Variant::NIL);
+	register_op<OperatorEvaluatorNot<Projection>>(Variant::OP_NOT, Variant::PROJECTION, Variant::NIL);
+	register_op<OperatorEvaluatorNot<Color>>(Variant::OP_NOT, Variant::COLOR, Variant::NIL);
+	register_op<OperatorEvaluatorNot<StringName>>(Variant::OP_NOT, Variant::STRING_NAME, Variant::NIL);
+	register_op<OperatorEvaluatorNot<NodePath>>(Variant::OP_NOT, Variant::NODE_PATH, Variant::NIL);
+	register_op<OperatorEvaluatorNot<::RID>>(Variant::OP_NOT, Variant::RID, Variant::NIL);
+	register_op<OperatorEvaluatorNot<Callable>>(Variant::OP_NOT, Variant::CALLABLE, Variant::NIL);
+	register_op<OperatorEvaluatorNot<Signal>>(Variant::OP_NOT, Variant::SIGNAL, Variant::NIL);
+	register_op<OperatorEvaluatorNot<Dictionary>>(Variant::OP_NOT, Variant::DICTIONARY, Variant::NIL);
+	register_op<OperatorEvaluatorNot<Array>>(Variant::OP_NOT, Variant::ARRAY, Variant::NIL);
+	register_op<OperatorEvaluatorNot<PackedByteArray>>(Variant::OP_NOT, Variant::PACKED_BYTE_ARRAY, Variant::NIL);
+	register_op<OperatorEvaluatorNot<PackedInt32Array>>(Variant::OP_NOT, Variant::PACKED_INT32_ARRAY, Variant::NIL);
+	register_op<OperatorEvaluatorNot<PackedInt64Array>>(Variant::OP_NOT, Variant::PACKED_INT64_ARRAY, Variant::NIL);
+	register_op<OperatorEvaluatorNot<PackedFloat32Array>>(Variant::OP_NOT, Variant::PACKED_FLOAT32_ARRAY, Variant::NIL);
+	register_op<OperatorEvaluatorNot<PackedFloat64Array>>(Variant::OP_NOT, Variant::PACKED_FLOAT64_ARRAY, Variant::NIL);
+	register_op<OperatorEvaluatorNot<PackedStringArray>>(Variant::OP_NOT, Variant::PACKED_STRING_ARRAY, Variant::NIL);
+	register_op<OperatorEvaluatorNot<PackedVector2Array>>(Variant::OP_NOT, Variant::PACKED_VECTOR2_ARRAY, Variant::NIL);
+	register_op<OperatorEvaluatorNot<PackedVector3Array>>(Variant::OP_NOT, Variant::PACKED_VECTOR3_ARRAY, Variant::NIL);
+	register_op<OperatorEvaluatorNot<PackedColorArray>>(Variant::OP_NOT, Variant::PACKED_COLOR_ARRAY, Variant::NIL);
 
 	register_string_op(OperatorEvaluatorInStringFind, Variant::OP_IN);
 
diff --git a/core/variant/variant_op.h b/core/variant/variant_op.h
index d2163cf92dd..5db4d638067 100644
--- a/core/variant/variant_op.h
+++ b/core/variant/variant_op.h
@@ -805,14 +805,14 @@ class OperatorEvaluatorNot {
 public:
 	static void evaluate(const Variant &p_left, const Variant &p_right, Variant *r_ret, bool &r_valid) {
 		const A &a = *VariantGetInternalPtr<A>::get_ptr(&p_left);
-		*r_ret = !a;
+		*r_ret = a == A();
 		r_valid = true;
 	}
 	static inline void validated_evaluate(const Variant *left, const Variant *right, Variant *r_ret) {
-		*VariantGetInternalPtr<bool>::get_ptr(r_ret) = !*VariantGetInternalPtr<A>::get_ptr(left);
+		*VariantGetInternalPtr<bool>::get_ptr(r_ret) = *VariantGetInternalPtr<A>::get_ptr(left) == A();
 	}
 	static void ptr_evaluate(const void *left, const void *right, void *r_ret) {
-		PtrToArg<bool>::encode(!PtrToArg<A>::convert(left));
+		PtrToArg<bool>::encode(PtrToArg<A>::convert(left) == A(), r_ret);
 	}
 	static Variant::Type get_return_type() { return Variant::BOOL; }
 };
diff --git a/tests/core/variant/test_variant.h b/tests/core/variant/test_variant.h
index 024fcf53c43..66b58620d28 100644
--- a/tests/core/variant/test_variant.h
+++ b/tests/core/variant/test_variant.h
@@ -1171,6 +1171,22 @@ TEST_CASE("[Variant] Utility functions") {
 	}
 }
 
+TEST_CASE("[Variant] Operator NOT") {
+	// Verify that operator NOT works for all types and is consistent with booleanize().
+	for (int i = 0; i < Variant::VARIANT_MAX; i++) {
+		Variant value;
+		Callable::CallError err;
+		Variant::construct((Variant::Type)i, value, nullptr, 0, err);
+
+		REQUIRE_EQ(err.error, Callable::CallError::CALL_OK);
+
+		Variant result = Variant::evaluate(Variant::OP_NOT, value, Variant());
+
+		REQUIRE_EQ(result.get_type(), Variant::BOOL);
+		CHECK_EQ(!value.booleanize(), result.operator bool());
+	}
+}
+
 } // namespace TestVariant
 
 #endif // TEST_VARIANT_H