Set your cookie preferences

We use cookies, please see our Cookie Notice for more information. By clicking "Accept Cookies" you consent to our use of cookies.

Save 30% on Select Cards & Invitations* Shop Now ➞

Save 30% on Business Cards* Shop Now ➞

Zazzle is still shipping as usual using alternative couriers *Learn more

Love It or We'll Take Back! Extended Returns Until January 2026 *

Search for products or designs

Sell on Zazzle쑢Shopping Cart

HolidayOpens a menu with links to top holiday pages

Christmas Cards >
Flat Cards
Foil Cards
Folded Cards
Funny Cards
Non-Photo Cards
Holiday Cards >
Thanksgiving Cards
Hanukkah Cards
New Year's Cards
Addressing Service >
Return Address Labels
Envelopes
Holiday Home Decor >
Ornaments
Mugs
Pillows
Blankets
Tree Skirts
Stockings
Festive Outfits >
T-shirts
Socks
Totes
Disney Pajamas
Grinch Pajamas
Gifts >
Gifts for Him
Gifts for Her
Gifts for Parents
Gifts for Grandparents
Photo Gifts
Funny Gifts
Baby's First Christmas
Create Your Own
Gift Wrapping Supplies >
Wrapping Paper
Stickers
Rubber Stamps
Gift Tags
Party Supplies >
Holiday Party Invitations
New Years Invitations
Napkins
Plates
Barware More for Holidays
Gift Cards

Shop Holidays

Holidays your way.
Shop Holidays at Zazzle.

WeddingsOpens a menu with links to top wedding-related pages.

Invitations & Stationery >
Wedding Invitations
Save the Dates
Enclosure Cards
Rehearsal Dinner Invitations
RSVP Cards
Thank You Cards
Wedding Announcements
Bachelor Party Invitations
Bachelorette Party Invitations
Bridal Shower Invitations
Mailing Accessories
Envelopes
Décor & Party Supplies >
Posters & Prints
Seating Charts
Banners
Wedding Tabletop Signs
Napkins
Table Serving & Décor
Bachelor Party Supplies
Bachelorette Party Supplies
Bridal Shower Supplies
Guest Books
Menus
Programs
Favours >
Wedding Can Coolers
Wedding Magnets
Wedding Sunglasses
Packaging >
Stickers & Labels
Favour Tags
Wine Bottle Labels
Gifts >
Wedding Party Gifts
Newlywed Gifts
Wedding Albums
Games & Activities >
Playing Cards
Poker Chips
Wedding Themes
Boho Weddings
Retro Weddings
Minimalist Weddings
Classic Weddings
Rustic Weddings
Floral Weddings
Shop Weddings >

Your wedding, our expertise
Shop Weddings at Zazzle.

Create Your OwnOpens a menu with links to top Create-Your-Own products.

Accessories >
Buttons
Tote Bags
Keychains
Baby & Kids >
Baby Clothes
Wall Art & Décor
Clothing & Shoes >
T-Shirts
Socks
Crafts & Party Supplies >
Paper Napkins
Party Signs & Banners
Stickers
Wrapping Paper
Electronics >
Phone Cases
Mouse Pads & Desk Mats

Office & School >
Business Cards
Badges
Post-it® Notes
Home Décor >
Pillows
Blankets
Outdoor Signs & Flags
Mugs
Aprons
Sports, Toys, & Games >
Pickleball Paddles
Golf Balls
Puzzles
Wall Art & Decor >
Posters
Canvas Prints
Photo Tiles
Invitations & Stationery >
Save the Dates
Greeting Cards
Return Address Labels

Weddings >
Programs
Menus
Guest Books
Create Your Own >

Create Your Own
Create something perfectly one-of-a-kind.

Gifts & OccasionsOpens a menu with links to top gift and moment-related pages.

Gifts for Everyone
Gifts for Him
Gifts for Her
Gifts for Parents
Gifts for Grandparents
Gifts for Kids
Gifts for Teens
Funny Gifts
Photo Gifts
Gifts Under $50
Gifts Under $25
Shop Gifts >
Officially Licensed Stores
Disney
Sesame Street
Peanuts
Harry Potter
DC Super Heroes
Dr. Seuss
Looney Tunes
Where the Wild Things Are
Eric Carle
Peter Rabbit
Official Stores >
All of Life's Moments
Birthdays
Baby Showers
Weddings
Graduation
Mother's Day
Top Gift Ideas
T-Shirts
Mugs
Pillows
Blankets
Aprons
More on Zazzle
New Arrivals
Shop the Sale
Trending Creators

Personalized Gifts
Ideas for everyone on your list.

Invitations & StationeryOpens a menu with links to top invitations & stationery-related pages.

Invitations & Announcements >
Wedding Invitations
Baby Shower Invitations
Birthday Invitations
RSVP Cards
Save the Dates
Graduation Announcements
Graduation Invitations
Moving Announcements
Religious Invitations
Greeting Cards >
Postcards
Birthday Cards
Thank You Cards
Graduation Cards
Mother's Day Cards
Father's Day Cards
Christmas Cards
Hanukkah Cards
Mailing Accessories >
Envelope Seals
Envelopes
Invitation Belly Bands
Return Address Labels
Rubber Stamps & Ink
Personalised Stationery >
Note Cards
Notepads
Post-it® Notes
Stationery Paper
Invitations & Stationery >

Invitations & Stationery
Great cards, invites, and mailing accessories to make your day.

Office & SchoolOpens a menu with links to top office & school-related pages.

Business Cards >
QR Code Business Cards
Hair Stylist Business Cards
Construction Business Cards
Office & School Supplies >
Calendars
Planners
Desk Accessories
Badges
Name Tags
Business Stationery >
Appointment Cards
Notebooks
Notepads
Rubber Stamps & Ink
Displays & Packaging >
Display Cards
Hang Tags & Package Inserts
Price Tags
Product Labels
Marketing Materials >
Flyers
Gift Certificates
Loyalty Cards
Referral Cards
Discount Cards
Promotional Products
Menus & Price Lists
Bumper Stickers & Magnets
Signs & Posters >
Banners
Posters & Prints
Office & School >

Office & School
Explore perfectly custom office and school supplies.

Crafts & Party SuppliesOpens a menu with links to top crafts & party supplies-related pages.

Craft Supplies >
Scrapbook Albums
Rubber Stamps & Ink
Scrapbook Paper
Bookplates & Labels
Gift Wrapping Supplies >
Gift Boxes
Gift Tags
Ribbon
Stickers & Labels
Tissue Paper
Wrapping Paper
Décor >
Backdrops
Balloons
Confetti
Party Signs
Banners
Posters & Prints
Favours >
Hand Fans
Games & Activities >
Playing Cards
Packaging >
Favour Bags
Favour Boxes
Favour Tags
Stationery >
Guest Books
Place Cards
Tableware >
Bottle Tags
Paper Napkins
Paper & Party Plates
Paper Bowls
Paper Cups
Paper Placemats
Wine Glass Charms & Tags
Crafts & Party >

Crafts & Party Supplies
Celebrate everything with custom party decorations and more.

MoreOpens a menu with links to more categories of top pages.

Clothing & Shoes >
T-Shirts & Shirts
Socks
Shoes
Leggings
Baby & Kids >
Kids Clothing
Toddler Clothing
Baby Clothing
Clothing Labels
Accessories >
Buttons
Keychains
Hats
Suit Accessories
Travel Accessories
Bags & Wallets >
Tote Bags
Backpacks
Fanny Packs
Gym & Duffel Bags
Electronics >
Phone Cases & Accessories
Mouse Pads & Desk Mats

Sports & Outdoor Gear >
Game Room
Golf Accessories & Golf Gear
Pickleball Paddles
Toys & Games >
Playing Cards
Puzzles
Wall Art & Décor >
Posters & Prints
Canvas Art
Wall Art Sets
Clocks
Tapestries
Wall Decals & Stickers
Wallpaper
Nursery & Kids' Room Décor >
Blankets
Door Signs
Nursery Art
Shop All >

Invitations & Stationery

쎃

쎃

Popular Funny 21st Birthday Cards

896 results

All Products

< Invitations & Stationery

< Greeting Cards

Folded...

Flat...

Vertical...

Horizontal...

12.7 x 17.8 cm...

10.8 x 14.2 cm...

21.6 x 27.9 cm...

10.1 x 14.2 cm...

8.9 x 5.1 cm...

10.8 x 14 cm...

Under $5

$5 to $15

$25 to $50

Design Colour

Number of Photos

Letterpress

Foil

Type

Format

Orientation

Size

Price

Design Style

Special Picks

Events & Occasions

Recipients

Brand

Creator Store

Makers

Design Options

Colour

Sort by:

58 Years Old Bday Math Teacher 58th Birthday Gift Postcard

PriceCA$2.95

59 Years Old Bday Math Teacher 59th Birthday Gift Postcard

PriceCA$2.95

67 Years Old Bday Math Teacher 67th Birthday Gift Postcard

PriceCA$2.95

72 Years Old Bday Math Teacher 72nd Birthday Gift Postcard

PriceCA$2.95

57 Years Old Bday Math Teacher 57th Birthday Gift Postcard

PriceCA$2.95

20th Birthday Square Root Math 20 Years Old Bday Postcard

PriceCA$2.95

25th Birthday Square Root Math 25 Years Old Bday Postcard

PriceCA$2.95

80 Years Old Bday Math Teacher 80th Birthday Gift Postcard

PriceCA$2.95

74 Years Old Bday Math Teacher 74th Birthday Gift Postcard

PriceCA$2.95

35th Birthday Square Root Math 35 Years Old Bday Postcard

PriceCA$2.95

29th Birthday Square Root Math 29 Years Old Bday Postcard

PriceCA$2.95

60 Years Old Bday Math Teacher 60th Birthday Gift Postcard

PriceCA$2.95

32nd Birthday Square Root Math 32 Years Old Bday Postcard

PriceCA$2.95

39th Birthday Square Root Math 39 Years Old Bday Postcard

PriceCA$2.95

46th Birthday Square Root Math 46 Years Old Bday Postcard

PriceCA$2.95

83 Years Old Bday Math Teacher 83rd Birthday Gift Postcard

PriceCA$2.95

33rd Birthday Square Root Math 33 Years Old Bday Postcard

PriceCA$2.95

85 Years Old Bday Math Teacher 85th Birthday Gift Postcard

PriceCA$2.95

35 Year Old Bday 1986 Legend Since 35th Birthday Postcard

PriceCA$2.95

48th Birthday Square Root Math 48 Years Old Bday Postcard

PriceCA$2.95

71 Years Old Bday Math Teacher 71st Birthday Gift Postcard

PriceCA$2.95

40th Birthday Square Root Math 40 Years Old Bday Postcard

PriceCA$2.95

45th Birthday Square Root Math 45 Years Old Bday Postcard

PriceCA$2.95

30th Birthday Square Root Math 30 Years Old Bday Postcard

PriceCA$2.95

Save 30%

33 Year Old Bday 1988 Legend Since 33rd Birthday Card

Sale Price CA$4.12.CA$4.12 Original Price CA$5.88.CA$5.88

Save 30%

51 Year Old Bday Legend 51st Birthday Card

Sale Price CA$4.12.CA$4.12 Original Price CA$5.88.CA$5.88

Save 30%

16 Year Old Bday 2005 Legend Since 16th Birthday Card

Sale Price CA$4.12.CA$4.12 Original Price CA$5.88.CA$5.88

36th Birthday Square Root Math 36 Years Old Bday Postcard

PriceCA$2.95

81 Years Old Bday Math Teacher 81st Birthday Gift Postcard

PriceCA$2.95

Save 30%

12 Year Old Bday 2009 Legend Since 12th Birthday Card

Sale Price CA$4.12.CA$4.12 Original Price CA$5.88.CA$5.88

Save 30%

39 Year Old Bday Legend 39th Birthday Card

Sale Price CA$4.12.CA$4.12 Original Price CA$5.88.CA$5.88

42nd Birthday Square Root Math 42 Years Old Bday Postcard

PriceCA$2.95

Save 30%

41 Year Old Bday Legend 41st Birthday Card

Sale Price CA$4.12.CA$4.12 Original Price CA$5.88.CA$5.88

Save 30%

18 Year Old Bday 2003 Legend Since 18th Birthday Card

Sale Price CA$4.12.CA$4.12 Original Price CA$5.88.CA$5.88

Save 30%

38 Year Old Bday 1983 Legend Since 38th Birthday Card

Sale Price CA$4.12.CA$4.12 Original Price CA$5.88.CA$5.88

17th Birthday Square Root Math 17 Years Old Bday Postcard

PriceCA$2.95

70 Years Old Bday Math Teacher 70th Birthday Gift Postcard

PriceCA$2.95

69 Years Old Bday Math Teacher 69th Birthday Gift Postcard

PriceCA$2.95

25 Year Old Bday 1996 Awesome Since 25th Birthday Postcard

PriceCA$2.95

Vintage 1939 Original Parts Funny Birthday Gift Postcard

PriceCA$2.95

4 Year Old Bday 2017 Awesome Since 4th Birthday Postcard

PriceCA$2.95

Save 30%

21 Year Old 2002 Vintage Gift Women 21st Birthday Card

Sale Price CA$3.46.CA$3.46 Original Price CA$4.93.CA$4.93

21 Sided 21st Birthday D20 Fantasy Gamer Die Postcard

PriceCA$2.85

Save 30%

5 Year Old Bday 2016 Awesome Since 5th Birthday Card

Sale Price CA$4.12.CA$4.12 Original Price CA$5.88.CA$5.88

Save 30%

68 Year Old Bday 1953 Awesome Since 68th Birthday Card

Sale Price CA$4.12.CA$4.12 Original Price CA$5.88.CA$5.88

Save 30%

91 Year Old Bday 1930 Awesome Since 91st Birthday Card

Sale Price CA$4.12.CA$4.12 Original Price CA$5.88.CA$5.88

Save 30%

71 Year Old Bday 1950 Awesome Since 71st Birthday Card

Sale Price CA$4.12.CA$4.12 Original Price CA$5.88.CA$5.88

Save 30%

70 Year Old Bday 1951 Awesome Since 70th Birthday Card

Sale Price CA$4.12.CA$4.12 Original Price CA$5.88.CA$5.88

Save 30%

81 Year Old Bday 1940 Awesome Since 81st Birthday Card

Sale Price CA$4.12.CA$4.12 Original Price CA$5.88.CA$5.88

Save 30%

4 Year Old Bday 2017 Awesome Since 4th Birthday Card

Sale Price CA$4.12.CA$4.12 Original Price CA$5.88.CA$5.88

Save 30%

7 Year Old Bday 2014 Awesome Since 7th Birthday Card

Sale Price CA$4.12.CA$4.12 Original Price CA$5.88.CA$5.88

Save 30%

79 Year Old Bday 1942 Awesome Since 79th Birthday Card

Sale Price CA$4.12.CA$4.12 Original Price CA$5.88.CA$5.88

Save 30%

73 Year Old Bday 1948 Awesome Since 73rd Birthday Card

Sale Price CA$4.12.CA$4.12 Original Price CA$5.88.CA$5.88

Save 30%

80 Year Old Bday 1941 Awesome Since 80th Birthday Card

Sale Price CA$4.12.CA$4.12 Original Price CA$5.88.CA$5.88

Save 30%

77 Year Old Bday 1944 Awesome Since 77th Birthday Card

Sale Price CA$4.12.CA$4.12 Original Price CA$5.88.CA$5.88

Save 30%

61 Year Old Bday 1960 Awesome Since 61st Birthday Card

Sale Price CA$4.12.CA$4.12 Original Price CA$5.88.CA$5.88

Save 30%

11 Year Old Bday 2010 Awesome Since 11th Birthday Card

Sale Price CA$4.12.CA$4.12 Original Price CA$5.88.CA$5.88

Save 30%

31 Year Old Bday 1990 Awesome Since 31st Birthday Card

Sale Price CA$4.12.CA$4.12 Original Price CA$5.88.CA$5.88

Save 30%

21 Year Old Bday 2000 Awesome Since 21st Birthday Card

Sale Price CA$4.12.CA$4.12 Original Price CA$5.88.CA$5.88

Save 30%

44 Year Old Bday 1977 Awesome Since 44th Birthday Card

Sale Price CA$4.12.CA$4.12 Original Price CA$5.88.CA$5.88

쎂Previous 6 7 8 9 10 Next쎃

The Zazzle Promise

Love It Guarantee
Don't love it? We'll take it back! 30-day returns “100% Love It Guarantee.”
Easy International Delivery
No-hassle-free shipping with no surprise fees. We cover any customs & duties.
Secure Shopping Guaranteed
100% Secure payment with SSL Encryption.

Search Feedback

Did you find what you were looking for?

YesNo

If you need help or have a question for Customer Service, please visit our Help Centre