Phil Leslie (11 March 1909 - 23 September 1988) was an American comedy writer.
His first career, since he was good at math, was keeping books for a local bank in St. Louis, but he began pursuing a career in writing.
In 1938, he and his wife, Helen, took their four children (Ann, Jane, Sue and Phil Jr.) by train to Hollywood, California, in the hopes of making it big. His comedy writing skills were soon recognized and he began co-writing with Don Quinn on the Fibber McGee and Molly radio program. After Don left the show to pursue other interests, Leslie became the main writer. Leslie also was a writer for The Charlotte Greenwood Show.
He graduated from radio to television and wrote episodes of Here's Lucy, Dennis the Menace, Dobie Gillis, Mr. Ed, The Brady Bunch, and many others.
Phil, Jr. followed his father's passion for business and started what would become the largest retail pool supply company in the world, Leslie's Poolmart. Leslie, Sr. died 23 September 1988, aged 79, one day after his son lost control of the company he built to a venture capitalist group.
He wrote for The Addams Family television series.