Gayla Peevey Henderson (born March 8, 1943) is a former singer and child star from Ponca City, Oklahoma. She is best known for her recording, under her maiden name Gayla Peevey, of "I Want a Hippopotamus for Christmas" (Columbia 4-40106, 1953). Peevey recorded the novelty song when she was 10 years old.
In 1959, she had a minor hit with the song "Robot Man", recorded under the name Jamie Horton. The song was covered by Connie Francis.