Beverly Atlee Cleary born April 12, 1916) is an American writer of children's and young adult fiction. One of America's most successful living authors, 91 million copies of her books have been sold worldwide since her first book was published in 1950. Some of Cleary's best known characters are Ramona Quimby and Beezus Quimby, Henry Huggins and his dog Ribsy, and Ralph S. Mouse.

The majority of Cleary's books are set in the Grant Park neighborhood of northeast Portland, Oregon, where she was raised, and she has been credited as one of the first authors of children's literature to figure emotional realism in the narratives of her characters, often children in middle-class families.

She won the 1981 National Book Award for Ramona and Her Mother and the 1984 Newbery Medal for Dear Mr. Henshaw. For her lifetime contributions to American literature, Cleary received the National Medal of Arts, recognition as a Library of Congress Living Legend, and the Laura Ingalls Wilder Medal from the Association for Library Service to Children.