Phyllis Ada Diller (née Driver; July 17, 1917 – August 20, 2012) was an American stand-up comedian, actress, author, musician, and visual artist, best known for her eccentric stage persona, self-deprecating humor, wild hair and clothes, and exaggerated, cackling laugh.

Diller was one of the first female comics to become a household name in the U.S., credited as an influence by Joan Rivers, Roseanne Barr, and Ellen DeGeneres, among others. She had a large gay following and is considered a gay icon. She was also one of the first celebrities to openly champion plastic surgery, for which she was recognized by the cosmetic surgery industry.