Knock Knock
- سال: 1940
- ملک: United States of America
- صنف: Animation, Comedy
- اسٹوڈیو: Walter Lantz Productions
- مطلوبہ الفاظ: roof, cartoon bear, irritation, cartoon bird, noise, cartoon panda, cartoon woodpecker
- ڈائریکٹر: Alex Lovy, Walter Lantz
- کاسٹ: Sara Berner, Mel Blanc