Happy Birthday, Cookie Monster is a children's book written by Felice Haus, with illustrations by Carol Nicklaus, published in 1986 by Random House.

The book features Cookie Monster, a character from the PBS children's television series Sesame Street.

The book was honored as an International Reading Association Children's Choice.

In the end, they all have a good time, especially Cookie Monster.

The plot summary on the back of this book reads: "It is Cookie Monster's birthday.