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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 (187,736)
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Shopper Testimonials
“I love this sympathy card. It has just the right wording and empathy for a close friend that has lost a sister.”
Linda - Sep 18th, 2025
“Another beautiful card. This is the only place I buy my greeting cards. They are always perfect and the personalization makes them so much better than any card you can pick up at a store, plus they're even more affordable. Highly recommend Greeting Card Universe!”
Kim - Sep 15th, 2025
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Cards per Page:
Cards: 619 Pages: 21
Most Popular Newest Show adult cards
21 and Terrific for Her Pink Background card
21st Birthday Perfect Day with horses and butterfl…
Happy 21st Birthday Concept Nostalgic American SUV…
Happy 21st Birthday Concept Nostalgic American Del…
21st Happy Birthday Card - Summer bouquet card
Happy 21st Birthday to Someone Special, Orange flo…
Happy 21st Birthday Watercolor Vibrant Vintage Ste…
21st Birthday All Things Sporty card
21ST Birthday Party Invitation - Purple Brocade ca…
Happy Bee-Day - 21 - Sunflower and Bee card
Happy 21st Birthday with red balloon and puzzle gr…
Happy 21st Birthday Space Rocket Ship card
Happy 21st Birthday with orange balloon and puzzle…
Happy 21st birthday! : halftone wine bottle and gl…
Happy 21st Birthday Wine Bottle and Glasses card
Happy 21st Birthday Anime Gamer Girl card
Happy 21st Birthday, Eye Chart card
Happy 21st Birthday Abstract Concept Hot Rod Truck…
Happy 21st Birthday Abstract Concept Red Muscle Ca…
21st Birthday, Raccoons with present card
21st Birthday, Raccoon Portrait in fancy frame on …
Happy 21st Birthday Concept Nostalgic American Pic…
Happy 21st Birthday Abstract Concept Muscle Car ca…
Happy 21st Birthday Concept Sports Muscle Car card
Happy birthday, cupcake, 21 card
Happy 21st Birthday with Watercolor Blue Hydrangea…
21 and Terrific Stars Red White Blue For Him card
Happy birthday paper greeting card 21 card
Happy 21st Birthday Off Road Buggy Adventure card
Sing and Dance, 21 card
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