Happy Birthday Greeting Cards featuring Free Printable Birthday Card: Penguin's Lecture, Fishy Fun, Downloadable Gift and more

Wish them a happy birthday with this free printable card featuring a playful penguin lecturing tiny fish. Print at home for a chuckle.

Wish them a happy birthday with this free printable card featuring an excited owl demonstrating physics with an apple. Print at home!

Surprise them with laughter on their birthday using this free printable card! Easily print at home for a funny greeting.

Send cosmic birthday wishes with this free printable card! Easily print at home for a stellar, humorous greeting.

Celebrate their special day with this cheerful, free printable fox birthday card. Perfect for printing at home for a fun twist.

Wish them a happy birthday with this super funny free printable card! Perfect for bookworms, it's easy to print at home.

Wish a wise and wonderful birthday with this cute free printable owl card. Perfect for printing at home for a studious celebration.

Wish them a magical birthday with this free printable greeting card! It's easy to print at home and is sure to bring a smile.

Wish them a brilliant birthday with this free printable card! Print at home for a touch of scholarly humor.

Wish them a calculation of joy with this free printable birthday card! Print at home for a celebration of smarts.

Grab this free printable birthday card for an out-of-this-world celebration! Print at home for instant cosmic cheer.

Make their birthday explode with laughter with this free printable greeting card! It's a hilarious, print-at-home surprise for any science enthusiast.

Celebrate their special day with a smile and a diagram! This free printable card is a hilarious, print-at-home wish for a brilliant birthday.

Wish them a birthday as magical as a galaxy with this free printable card! Our lion cub artist is sketching celestial fun, print at home.

Wish them a birthday full of knowledge and laughs with this free printable card! It’s a funny, print-at-home message from your favorite professor.

Make their birthday hilariously clear with this free printable card! It’s a quirky, print-at-home greeting that’s sure to bring a grin.

Send a laugh with this unique free printable birthday card! Easily print at home for a quick and funny celebration.

Make their birthday lecture-worthy with this free printable card! An enthusiastic character uses a pointer stick, perfect for print-at-home.

Make their birthday hilariously memorable with this free printable card! A character comically trips over books, a funny, print-at-home surprise.

Wish them a bubbly birthday with this free printable card! A character imitates a happy bubbling reaction, perfect for print-at-home fun.