Happy Birthday, Cookie Monster was a children's book by Felice Haus , with illustrated by Carol Nicklausm published 1986 by Random House. The book features Cookie Monster, a character from the PBS children's television series, Sesame Street. The book was honoured as an International Reading Association Children's Choice .

The book was part of the Step into Reading series, in Step 1, meant for 4 to 8 year old children.

The plot summary on the back of this book reads: "It is Cookie Monster's birthday. He bakes a yummy cake. But he eats it all before the party begins! Now he has no cake to give his friends. What will he do? Find out in this funny story."

ISBN 0394881826