diff --git a/scene/animation/tween.cpp b/scene/animation/tween.cpp
index 72b31170ea9..4bb44313b00 100644
--- a/scene/animation/tween.cpp
+++ b/scene/animation/tween.cpp
@@ -164,6 +164,7 @@ Ref<SubtweenTweener> Tween::tween_subtween(const Ref<Tween> &p_subtween) {
 	if (tweener->subtween->parent_tree != nullptr) {
 		tweener->subtween->parent_tree->remove_tween(tweener->subtween);
 	}
+	subtweens.push_back(p_subtween);
 	append(tweener);
 	return tweener;
 }
@@ -200,6 +201,11 @@ void Tween::kill() {
 	running = false; // For the sake of is_running().
 	valid = false;
 	dead = true;
+
+	// Kill all subtweens of this tween.
+	for (Ref<Tween> &st : subtweens) {
+		st->kill();
+	}
 }
 
 bool Tween::is_running() {
diff --git a/scene/animation/tween.h b/scene/animation/tween.h
index ef82be9a2da..a4d94cfd2f2 100644
--- a/scene/animation/tween.h
+++ b/scene/animation/tween.h
@@ -112,6 +112,7 @@ private:
 
 	SceneTree *parent_tree = nullptr;
 	LocalVector<List<Ref<Tweener>>> tweeners;
+	LocalVector<Ref<Tween>> subtweens;
 	double total_time = 0;
 	int current_step = -1;
 	int loops = 1;