128+ Grandpa Knock Knock Jokes That’ll Have You Laughing Like a Kid Again (2026)
There’s nothing quite like the timeless humor of grandpa.
Grandpa Knock Knock Jokes bring together classic knock‑knock fun with the warm, witty charm that only grandfathers can deliver.
This collection of grandpa knock knock jokes is perfect for family gatherings, kids’ parties, or simply sharing a laugh across generations.
From silly puns to clever one‑liners, these jokes are lighthearted, wholesome, and guaranteed to spark smiles.
Whether you’re looking for funny grandpa jokes for kids, knock knock jokes to brighten family time, or playful humor to add to birthday cards and social media captions, these jokes prove that laughter truly runs in the family.
Grandpa Knock Knock Jokes One Liners
1. Knock! Knock!
Who’s there?
Cereal.
Cereal who?
Cereal pleasure meeting you!
2. Knock! Knock!
Who’s there?
Atch.
Watch who?
Bless you!
3. Knock! Knock!
Who’s there?
Olive.
Olive who?
Olive your jokes are really cracking me up!
4. Knock! Knock!
Who’s there?
Opportunity.
Opportunity who?
Opportunity knocks, but sometimes it’s a silent visitor!
5. Knock! Knock!
Who’s there?
Scold.
Scold who?
Scold out here, let me in!
6. Knock! Knock!
Who’s there?
Cash.
Cash who?
No thanks, I prefer almonds.
7. Knock! Knock!
Who’s there?
Butter.
Butter who?
Butter opens up, it’s getting chilly out here!
8. Knock! Knock!
Who’s there?
Atch.
Atch who?
Gesundheit!
9. Knock! Knock!
Who’s there?
Boo.
Boo who?
Boo who? Don’t cry, it’s just a joke!
10. Knock! Knock!
Who’s there?
Cargo.
Cargo who?
No, car go beep beep!
11. Knock! Knock!
Who’s there?
Wooden shoe.
Wooden shoe who?
Wooden shoe like to hear another joke?
12. Knock! Knock!
Who’s there?
Wanda.
Wanda who?
Wanda hang out with me?
13. Knock! Knock!
Who’s there?
Otto.
Otto who?
Otto knows. Do you?
14. Knock! Knock!
Who’s there?
Cow says.
Cow says who?
No, silly, cow says moo!
15. Knock! Knock!
Who’s there?
Spell.
Spell who?
W-H-O.
16. Knock! Knock!
Who’s there?
Boo.
Boo who?
Why are you crying?
17. Knock! Knock!
Who’s there?
Tank.
Tank who?
You’re welcome!
18. Knock! Knock!
Who’s there?
Thistle.
Thistle who?
Thistle have to do until a better joke comes along!
19. Knock! Knock!
Who’s there?
Dishes.
Dishes who?
Dishes the police! Open up!
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20. Knock! Knock!
Who’s there?
Noah.
Noah who?
Noah better way to spend the day than telling jokes!
21. Knock! Knock!
Who’s there?
Dishes.
Dishes who?
Dishes the police! Open up!
22. Knock! Knock!
Who’s there?
Figs.
Figs who?
Figs the doorbell, mine’s broken!
23. Knock! Knock!
Who’s there?
Justin.
Justin who?
Justin time for a great joke!
24. Knock! Knock!
Who’s there?
FBI.
FBI who?
FBI dropped by to say hello!
25. Knock! Knock!
Who’s there?
Déjà.
Déjà who?
Déjà vu! I’ve been here before, telling this joke!
26. Knock! Knock!
Who’s there?
Cook.
Cook who?
Cook me dinner and I’ll tell you more jokes!
27. Knock! Knock!
Who’s there?
Alex.
Alex who?
Alex-plain these jokes to you later!
28. Knock! Knock!
Who’s there?
Somebody.
Somebody who?
Somebody too short to reach the doorbell!
29. Knock! Knock!
Who’s there?
Harry.
Harry who?
Harry up and open the door, it’s chilly outside!
30. Knock! Knock!
Who’s there?
Tank.
Tank who?
Tank you for laughing at my joke!
31. Knock! Knock!
Who’s there?
Water.
Water who?
Water way to answer the door!
32. Knock! Knock!
Who’s there?
Haven.
Haven who?
Haven’t you had enough of these jokes yet?
33. Knock! Knock!
Who’s there?
Dozen.
Dozen who?
Dozen anyone want to come out and play?
34. Knock! Knock!
Who’s there?
Wendy.
Wendy who?
Wendy bell gets fixed, I won’t have to knock anymore!
35. Knock! Knock!
Who’s there?
Armageddon.
Armageddon who?
Armageddon getting tired of waiting for you to open the door!
36. Knock! Knock!
Who’s there?
FBI.
FB…
We’ll ask the questions around here!
37. Knock! Knock!
Who’s there?
Olive.
Olive who?
Olive for these jokes to end!
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38. Knock! Knock!
Who’s there?
Annie.
Annie who?
Annie chance I can come in and hang out?
39. Knock! Knock!
Who’s there?
Will.
Will who?
Will you open up already? I’ve got more jokes!
40. Knock! Knock!
Who’s there?
Viper.
Viper who?
Viper fine mess you’ve gotten me into!
41. Knock! Knock!
Who’s there?
Cash.
Cash who?
Cash me outside, how ’bout that?
42. Knock! Knock!
Who’s there?
Kanga.
Kanga who?
Kanga-rarely I get a chance to tell a good joke like this!
43. Knock! Knock!
Who’s there?
Says.
Says who?
Says me, telling jokes at your doorstep!
44. Knock! Knock!
Who’s there?
Europe.
Europe who?
Europe-t the best audience for these jokes!
45. Knock! Knock!
Who’s there?
Mikey.
Mikey who?
Mikey has the wrong key again!
46. Knock! Knock!
Who’s there?
Ho, ho.
Ho, ho who?
Ho, ho, hold on, there’s another knock-knock joke!
47. Knock! Knock!
Who’s there?
A herd.
A herd who?
A herd you were here, thought I’d drop by!
48. Knock! Knock!
Who’s there?
Honeybee.
Honeybee who?
Honeybee quick, I’m running out of jokes!
49. Knock! Knock!
Who’s there?
Doris.
Doris who?
Doris locked, can you let me in already!
50. Knock knock.
Who’s there?
Grandpa’s fashion sense.
Grandpa’s fashion sense, who?
Grandpa’s fashion sense is stuck in the past, he still wears bell-bottoms!
51. Knock! Knock!
Who’s there?
Lettuce.
Lettuce who?
Lettuce in and we’ll tell you more jokes!
52. Knock! Knock!
Who’s there?
Dewey.
Dewey who?
Dewey have to keep telling these jokes?
53. Knock! Knock!
Who’s there?
Robin.
Robin who?
Robin your house, so let me in!
54. Knock! Knock!
Who’s there?
Cows.
Cows who?
No, silly, cows say moo!
55. Knock! Knock!
Who’s there?
Dishes.
Dishes who?
Dishes the police, open up!
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56. Knock! Knock!
Who’s there?
Luke.
Luke who?
Luke forward to more jokes, Grandpa!
57. Knock! Knock!
Who’s there?
Abe.
Abe who?
Abe-tter have another joke, Grandpa!
58. Knock! Knock!
Who’s there?
Carl.
Carl who?
Carl-azy to tell another joke, Grandpa?
59. Knock! Knock!
Who’s there?
George.
George who?
George-ous day for more jokes, Grandpa!
60. Knock! Knock!
Who’s there?
Oscar.
Oscar who?
Oscar-n’t tell another joke, Grandpa?
61. Knock! Knock!
Who’s there?
Hank.
Hank who?
Hank-ering for another joke, Grandpa!
62. Knock! Knock!
Who’s there?
Ralph.
Ralph who?
Ralph-ly getting into these jokes, Grandpa!
63. Knock! Knock!
Who’s there?
Will.
Will who?
Will you tell another joke, Grandpa?
64. Knock! Knock!
Who’s there?
Dan.
Dan who?
Dan-dy if you told me another joke, Grandpa!
65. Knock! Knock!
Who’s there?
Kyle.
Kyle who?
Kyle tell jokes just like you, Grandpa!
66. Knock! Knock!
Who’s there?
Arthur.
Arthur who?
Arthur any good stories to tell, Grandpa?
67. Knock! Knock!
Who’s there?
Stan.
Stan who?
Stan-ted to hear more jokes, Grandpa!
68. Knock! Knock!
Who’s there?
Owen.
Owen who?
Owen a good joke, Grandpa?
69. Knock! Knock!
Who’s there?
Carl.
Carl who?
Carl-azy to tell another joke, Grandpa?
70. Knock! Knock!
Who’s there?
Ralph.
Ralph who?
Ralph-ly getting into these jokes, Grandpa!
71. Knock! Knock!
Who’s there?
Joe.
Joe who?
Joe-kers run in the family, Grandpa!
72. Knock! Knock!
Who’s there?
Will.
Will who?
Will you tell another joke, Grandpa?
73. Knock! Knock!
Who’s there?
George.
George who?
George-ous day for more jokes, Grandpa
74. Knock! Knock!
Who’s there?
Abe.
Abe who?
Abe-tter have another joke, Grandpa!
75. Knock! Knock!
Who’s there?
Oscar.
Oscar who?
Oscar-n’t tell another joke, Grandpa?
Grandpa Knock Knock Jokes One Liners: Quick Quips for Instant Chuckles
76. Knock! Knock!
Who’s there?
Grandpa.
Grandpa who?
Grandpa-tulate me, I remembered another joke!
77. Knock! Knock!
Who’s there?
Ben.
Ben who?
Ben watching TV, Grandpa.
78. Knock! Knock!
Who’s there?
Old-timer.
Old-timer who?
Old-timer, remember these jokes?
79. Knock! Knock!
Who’s there?
Arthur.
Arthur who?
Arthur any good stories to tell, Grandpa?
80. Knock! Knock!
Who’s there?
Pop.
Pop who?
Pop the corn and let’s share some jokes!
81. Knock! Knock!
Who’s there?
Frank.
Frank who?
Frankly, Grandpa’s got more jokes up his sleeve!
82. Knock! Knock!
Who’s there?
Harry.
Harry who?
Harry up and tell another joke, Grandpa!
83. Knock! Knock!
Who’s there?
Noah.
Noah who?
Noah grandpa who tells jokes like me!
84. Knock! Knock!
Who’s there?
Art.
Art who?
Art thou ready for another joke,
Grandpa?
85. Knock! Knock!
Who’s there?
Ken.
Ken who?
Can I come in? It’s your grandson!
86. Knock! Knock!
Who’s there?
Perry.
Perry who?
Perry was pleased to share another joke, Grandpa!
87. Knock! Knock!
Who’s there?
Walter.
Walter who?
Walter you tell another story, Grandpa?
88. Knock! Knock!
Who’s there?
Stan.
Stan who?
Stan-ted to hear more jokes, Grandpa!
89. Knock! Knock!
Who’s there?
Sam.
Sam who?
Sam ready for another joke, Grandpa?
90. Knock! Knock!
Who’s there?
Owen.
Owen who?
Owen a good joke, Grandpa?
91. Knock! Knock!
Who’s there?
Earl.
Earl who?
Earl-y came to hear some jokes, Grandpa!
92. Knock! Knock!
Who’s there?
Jack.
Jack who?
Jack of all trades, even telling jokes, Grandpa!
93. Knock! Knock!
Who’s there?
Andy.
Andy who?
Andy is the best Grandpa in the world!
94. Knock! Knock!
Who’s there?
Joe.
Joe who?
Joe-kers run in the family, Grandpa!
95. Knock! Knock!
Who’s there?
Hank.
Hank who?
Hank-ering for another joke, Grandpa!
96. Knock! Knock!
Who’s there?
Andy.
Andy who?
Andy is the best Grandpa in the world!
97. Knock! Knock!
Who’s there?
Luke.
Luke who?
Luke forward to more jokes, Grandpa!
98. Knock! Knock!
Who’s there?
Perry.
Perry who?
Perry pleased to share another joke, Grandpa!
In wrapping up our journey through generations of humor, we trust these Grandpa Knock Knock Jokes have elevated your sense of joy to new heights! As the saying goes, laughter is the best remedy, and what better way to experience it than through the timeless wit of Grandpa’s playful jokes.
In the spirit of enduring cheer, if these knock-knock gems have brought a smile to your face and you’re hungry for more, explore additional rib-ticklers on our website. Your laughter has been a treasured part of our shared legacy, and we extend our heartfelt thanks for joining us on this delightful escapade. Until the next round of chuckles, safe travels through the humorous skies of Grandpa’s knock-knock wonders!
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