Millions of Cats is a children's picture book written and illustrated by Wanda Gág in 1928. The book won a Newbery Honor award in 1929, one of the few picture books to do so. Millions of Cats is the oldest American picture book still in print.
It entered the public domain in the United States in 2024.
The hand-lettered text, done by the author's brother, tells the story of an elderly couple who live comfortably, but realize that they are very lonely. The wife wants a cat to love, so her husband sets off in search of a beautiful one to bring home to her. After travelling far away from home, he finds a hillside covered in "cats here, cats there, Cats and kittens everywhere. Hundreds of cats, thousands of cats, Millions and billions and trillions of cats..." This rhythmic phrase is repeated several other times throughout the story.