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21st Birthday Cards

Drink ... drank ... drunk? Not too much, we hope. Send a 21st Birthday Card to someone who has hit that milestone like a boss and is ready to celebrate. Choose from 790+ exceptional designs, add your personal message, and we'll mail it next business day. Throwing a party? No worries. We have 21st Birthday Party Invitations, too. Yeah, 'cause we're cool like that.

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Birthday (191,098)
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Shopper Testimonials
“Greeting Card Universe provides the perfect personalized cards for any occasion. I especially love the age specific birthday cars for kids. The recipients love seeing their picture and name in the birthday card.”
Michelle - Sacramento, CA - Oct 4th, 2026
“Great selection. I got the perfect card with personalization. It was exactly what I ordered and shipping was fast. Price was very fair. I will be ordering from this site again. Thanks!!!”
Gail - Oct 3rd, 2026
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Cards per Page:
Cards: 635 Pages: 22
Most Popular Newest Show adult cards
21st Birthday for Sweetheart card
21st Birthday, Stylish Modern card
Happy birthday for 21 year old, Jazz cats play mus…
21st Birthday Wishes Watercolor Bright Yellow Parr…
Happy 21st Birthday Cards -- Peace Symbol and Flow…
Birthday Candles card
30th Birthday card
21st Birthday Crafted Look card
21st Birthday Flower Decorated Numbers card
Happy 21st Birthday with Red Wine card
21st Birthday Fishing From a Boat Birthday card
21ST BIrthday - Pink Flowers card
Birthday 21st Lighthouse Beacon for the Sea Water …
21st Birthday, Canada Goose with purple, red and y…
Happy 21st Birthday Card
For 21st Birthday Petunia Rose Floral Wreath Water…
21st birthday wine and birthday candles card
21st Birthday Festive and Bright Balloons and Star…
Happy 21st birthday, chirping sparrows card
Happy 21st Birthday, Muskegon Lighthouse and Sailb…
Happy 21st Birthday for Someone Special, Orange da…
Happy Birthday to an Exceptional 22 Year Old! card
For 21st Birthday Terrace of Manor House Garden Wa…
21st Birthday, Sunset on the Mountains card
Funny Whale Pun 21st Birthday card
Happy 21 Birthday card
21st Birthday with Painting of a Skier card
Birthday Heart of Flowers for someone special on t…
Funny 21st Birthday with cake card
Pink and blue flowers, happy 21st birthday card
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