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100 Funny Knock-Knock Jokes (Classics + New Ones)

Knock-knock jokes have been making kids giggle and adults sigh since the 1930s, and they still work every single time. This is the definitive collection: 100 funny knock-knock jokes covering the classics everyone knows plus fresh setups your friends haven't heard yet.

They're the perfect joke format for kids learning timing, for long car rides, and for interrupting your sibling at the worst possible moment. Need more ammo? Our jokes for kids and dad jokes collections pair beautifully with these.

🧒 Kids Jokes 👨 Dad Jokes 🌽 Corny Jokes 😄 Clean Jokes

Classic Knock-Knock Jokes Everyone Knows

  1. 1
    Knock knock.
    Who's there?
    Boo.
    Boo who?
    Don't cry, it's just a joke.
  2. 2
    Knock knock.
    Who's there?
    Lettuce.
    Lettuce who?
    Lettuce in, it's freezing out here!
  3. 3
    Knock knock.
    Who's there?
    Interrupting cow.
    Interrupting c—
    MOO!
  4. 4
    Knock knock.
    Who's there?
    Tank.
    Tank who?
    You're welcome!
  5. 5
    Knock knock.
    Who's there?
    Nobel.
    Nobel who?
    No bell, that's why I knocked!
  6. 6
    Knock knock.
    Who's there?
    Olive.
    Olive who?
    Olive you and I don't care who knows it!
  7. 7
    Knock knock.
    Who's there?
    Cow says.
    Cow says who?
    No, a cow says moo!
  8. 8
    Knock knock.
    Who's there?
    Atch.
    Atch who?
    Bless you!
  9. 9
    Knock knock.
    Who's there?
    Dwayne.
    Dwayne who?
    Dwayne the bathtub, I'm dwowning!
  10. 10
    Knock knock.
    Who's there?
    Who.
    Who who?
    Is there an owl in here?
  11. 11
    Knock knock.
    Who's there?
    Can I come in?
    Can I come in who?
    Not until you wipe your feet.
  12. 12
    Knock knock.
    Who's there?
    Ketchup.
    Ketchup who?
    Ketchup with me and I'll tell you!
  14. 13
    Knock knock.
    Who's there?
    Amish.
    Amish who?
    Aww, I miss you too!
  15. 14
    Knock knock.
    Who's there?
    Alpaca.
    Alpaca who?
    Alpaca the suitcase, you load up the car!
  16. 15
    Knock knock.
    Who's there?
    Harry.
    Harry who?
    Harry up and answer the door!
  17. 16
    Knock knock.
    Who's there?
    To.
    To who?
    Actually, it's "to whom."
  18. 17
    Knock knock.
    Who's there?
    I eat mop.
    I eat mop who?
    You eat mow-pooh?! Gross!
  19. 18
    Knock knock.
    Who's there?
    Hatch.
    Hatch who?
    Bless you again — maybe see a doctor?
  20. 19
    Knock knock.
    Who's there?
    Interrupting doctor.
    Interrupting doc—
    You're cured! Next patient!
  21. 20
    Knock knock.
    Who's there?
    Beats.
    Beats who?
    Beats me — I forgot the punchline.

Food Knock-Knock Jokes

  1. 21
    Knock knock.
    Who's there?
    Butter.
    Butter who?
    Butter let me in, it's cold out here!
  2. 22
    Knock knock.
    Who's there?
    Orange.
    Orange who?
    Orange you glad I didn't say banana?
  3. 23
    Knock knock.
    Who's there?
    Banana.
    Banana who?
    Knock knock. (Who's there?) Banana. (Banana who?) Knock knock...
  4. 24
    Knock knock.
    Who's there?
    Orange.
    Orange who?
    Orange you glad the banana joke is over?
  5. 25
    Knock knock.
    Who's there?
    Lettuce.
    Lettuce who?
    Lettuce have a moment of silence for the banana.
  6. 26
    Knock knock.
    Who's there?
    Pasta.
    Pasta who?
    Pasta salt, please!
  7. 27
    Knock knock.
    Who's there?
    Cheese.
    Cheese who?
    Cheese a nice person!
  8. 28
    Knock knock.
    Who's there?
    Waffle.
    Waffle who?
    Waffle-y good to see you!
  9. 29
    Knock knock.
    Who's there?
    Candice.
    Candice who?
    Candice door open or what?
  10. 30
    Knock knock.
    Who's there?
    Europe.
    Europe who?
    No, YOU'RE a poo!
  11. 31
    Knock knock.
    Who's there?
    Ice cream.
    Ice cream who?
    Ice cream every time I see a ghost!
  12. 32
    Knock knock.
    Who's there?
    Cereal.
    Cereal who?
    Cereal-ously, open the door!
  13. 33
    Knock knock.
    Who's there?
    Pizza.
    Pizza who?
    Pizza nice guy, give me a slice!
  14. 34
    Knock knock.
    Who's there?
    Honey.
    Honey who?
    Honey, I'm home!
  15. 35
    Knock knock.
    Who's there?
    Anita.
    Anita who?
    Anita borrow your Wi-Fi password!
  16. 36
    Knock knock.
    Who's there?
    Yoda lady.
    Yoda lady who?
    Yoda lady who I saw last night!
  18. 37
    Knock knock.
    Who's there?
    Panther.
    Panther who?
    Panther no panths, I'm freezing!
  19. 38
    Knock knock.
    Who's there?
    Peas.
    Peas who?
    Peas to meet you!
  20. 39
    Knock knock.
    Who's there?
    Stella.
    Stella who?
    Stella no until you open this door!
  21. 40
    Knock knock.
    Who's there?
    Water.
    Water who?
    Water you waiting for? Open up!

Animal Knock-Knock Jokes

  1. 41
    Knock knock.
    Who's there?
    A little old lady.
    A little old lady who?
    All this time I didn't know you could yodel!
  2. 42
    Knock knock.
    Who's there?
    Owl.
    Owl who?
    Owl tell you if you promise not to hoot.
  3. 43
    Knock knock.
    Who's there?
    Dolphin.
    Dolphin who?
    Dolphin-itely happy to see you!
  4. 44
    Knock knock.
    Who's there?
    Gorilla.
    Gorilla who?
    Gorilla me a hamburger while you're up!
  5. 45
    Knock knock.
    Who's there?
    Hyena.
    Hyena who?
    Hyena nuther joke just like this one!
  6. 46
    Knock knock.
    Who's there?
    Moo.
    Moo who?
    A cow saying "who"? Now I've heard everything.
  7. 47
    Knock knock.
    Who's there?
    Kiwi.
    Kiwi who?
    Kiwi go to the store together?
  8. 48
    Knock knock.
    Who's there?
    Toucan.
    Toucan who?
    Toucan play at that game!
  9. 49
    Knock knock.
    Who's there?
    Bear.
    Bear who?
    Bear with me, the joke gets better.
  10. 50
    Knock knock.
    Who's there?
    Horse.
    Horse who?
    Horse of a different color, that's who.
  11. 51
    Knock knock.
    Who's there?
    Shark.
    Shark who?
    Shark-y waters ahead — open carefully.
  12. 52
    Knock knock.
    Who's there?
    Aligator.
    Aligator who?
    Aligator another joke later, promise.
  13. 53
    Knock knock.
    Who's there?
    Cur-ow.
    Cur-ow who?
    No, cur-ow MEEE.
  14. 54
    Knock knock.
    Who's there?
    Hoot.
    Hoot who?
    Hoot do you think you are?
  15. 55
    Knock knock.
    Who's there?
    Says me.
    Says me who?
    Exactly — says me!

Name-Game Knock-Knock Jokes

  1. 56
    Knock knock.
    Who's there?
    Ya.
    Ya who?
    I'm excited to see you too!
  2. 57
    Knock knock.
    Who's there?
    Adore.
    Adore who?
    Adore is between us, open up!
  3. 58
    Knock knock.
    Who's there?
    Arthur.
    Arthur who?
    Arthur any more of these jokes left?
  4. 59
    Knock knock.
    Who's there?
    Alex.
    Alex who?
    Alex the questions around here!
  5. 60
    Knock knock.
    Who's there?
    Anna.
    Anna who?
    Anna-ther knock-knock joke? You lucky thing.
  7. 61
    Knock knock.
    Who's there?
    Ben.
    Ben who?
    Ben knocking for ten minutes!
  8. 62
    Knock knock.
    Who's there?
    Dewey.
    Dewey who?
    Dewey have to listen to another one?
  9. 63
    Knock knock.
    Who's there?
    Will.
    Will who?
    Will you just open the door already?
  10. 64
    Knock knock.
    Who's there?
    Justin.
    Justin who?
    Justin the neighborhood, thought I'd say hi!
  11. 65
    Knock knock.
    Who's there?
    Hal.
    Hal who?
    Hal will know if you don't open the door.
  12. 66
    Knock knock.
    Who's there?
    Iva.
    Iva who?
    Iva sore hand from all this knocking!
  13. 67
    Knock knock.
    Who's there?
    Norma Lee.
    Norma Lee who?
    Norma Lee I don't knock this hard, but I really need to come in.
  14. 68
    Knock knock.
    Who's there?
    Les.
    Les who?
    Les have another conversation somewhere warmer.
  15. 69
    Knock knock.
    Who's there?
    Ozzy.
    Ozzy who?
    Ozzy you glad I came to visit?
  16. 70
    Knock knock.
    Who's there?
    Saul.
    Saul who?
    Saul bad jokes must come to an end.

Smart & Twist Knock-Knock Jokes

  1. 71
    Knock knock.
    Who's there?
    Control freak. Okay, now you say "Control freak who?" See? This is exactly what I'm talking about.
  2. 72
    Knock knock.
    Who's there?
    Dave.
    Dave who?
    Dave the last dance for me?
  3. 73
    Knock knock.
    Who's there?
    Nadia.
    Nadia who?
    Nadia chance you'd open the door?
  4. 74
    Knock knock.
    Who's there?
    Four your information.
    Four your information who?
    Four your information, that's the whole joke.
  5. 75
    Knock knock.
    Who's there?
    Broken pencil.
    Broken pencil who?
    Never mind — it's pointless.
  6. 76
    Knock knock.
    Who's there?
    Ether.
    Ether who?
    Ether you let me in or I'm leaving!
  7. 77
    Knock knock.
    Who's there?
    Déjà.
    Déjà who?
    Knock knock. Who's there? Déjà. Déjà who? Knock knock...
  8. 78
    Knock knock.
    Who's there?
    To.
    To who?
    To WHOM.
  9. 79
    Knock knock.
    Who's there?
    The interrupting zombie.
    The interrupting zom—
    BRAINS!
  10. 80
    Knock knock.
    Who's there?
    A herd of cows.
    A herd of cows who?
    No, a HERD of cows — moo-ve along now.
  11. 81
    Knock knock.
    Who's there?
    Ken.
    Ken who?
    Ken I come in? It's cold out here!
  12. 82
    Knock knock.
    Who's there?
    Goat.
    Goat who?
    Goat to the door already!
  13. 83
    Knock knock.
    Who's there?
    Wanda.
    Wanda who?
    Wanda come in for a cup of coffee?
  14. 84
    Knock knock.
    Who's there?
    Mikey.
    Mikey who?
    Mikey won't fit in your pocket, that's who.
  16. 85
    Knock knock.
    Who's there?
    Stopwatch.
    Stopwatch who?
    Stopwatch-ing TV and do your homework!
  17. 86
    Knock knock.
    Who's there?
    Cargo.
    Cargo who?
    No, car go "vroom vroom"!
  18. 87
    Knock knock.
    Who's there?
    Police.
    Police who?
    Police let me in, it's urgent!
  19. 88
    Knock knock.
    Who's there?
    Iris.
    Iris who?
    Iris situation here — open the door!
  20. 89
    Knock knock.
    Who's there?
    Hour.
    Hour who?
    Hour you doing today?
  21. 90
    Knock knock.
    Who's there?
    Nana.
    Nana who?
    Nana your business!
  22. 91
    Knock knock.
    Who's there?
    Quinn.
    Quinn who?
    Quinn-tessential knock-knock joke, right?
  23. 92
    Knock knock.
    Who's there?
    Needle.
    Needle who?
    Needle little money to buy some candy.
  24. 93
    Knock knock.
    Who's there?
    Ima.
    Ima who?
    Ima gonna tell one more joke...
  25. 94
    Knock knock.
    Who's there?
    Udder.
    Udder who?
    Udder day I heard a better joke than this.
  26. 95
    Knock knock.
    Who's there?
    Homer.
    Homer who?
    Homer- Simpson, at your service. D'oh!

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Frequently Asked Questions

Who invented knock-knock jokes?
Knock-knock jokes exploded in popularity in the 1930s in the US — possibly from the 1936 song "Knock, Knock, Who's There?" and radio shows. Their exact inventor is unknown, but they've survived a century because the format teaches perfect joke timing.
Why do kids love knock-knock jokes so much?
The format is a safe, predictable game: kids know exactly when the punchline comes, which builds confidence in telling jokes. The call-and-response structure also makes them interactive instead of passive.
What's the most famous knock-knock joke?
"Interrupting cow" (MOO!) and the endless "Banana... orange you glad" combo are the two undisputed champions. Both are in the classics section above.
Are knock-knock jokes good for road trips?
They're scientifically proven* to reduce "are we there yet" by up to 40 minutes. (*Not actual science, but 100 knock-knock jokes will fill a serious chunk of any drive.)