Katey Sagal (born Catherine Louise Sagal on January 19, 1956 in Hollywood, California), is an American singer, writer, and actress most known for her portrayal of the character Peg Bundy in the American sitcom Married... with Children (1987 - 1997). She is the daughter of film director Boris Sagal, and the older sister of twin actresses Jean Sagal and Liz Sagal . She is also the sister of actor Joe Sagal .

Sagal began her career working the Hollywood circuit. She appeared in several television movies between 1971 and 1975, including the Columbo picture Candidate for Crime and in 1973 working as a back-up singer for various mega-stars including Bob Dylan, Gene Simmons, and Tanya Tucker. She was plucked from relative obscurity by Bette Midler, who hired her for her 1979 tour as one of her back-up singers (The Harlettes ).

Sagal returned to television in 1985 in the failed television series Mary starring Mary Tyler Moore. This led to her being cast in her most well-known role, that of Peg Bundy on the very successul American sitcom Married... with Children. On the show, she portrayed the lower-class, unhappy, sex-craving wife of a shoe salesman. Her career focused almost entirely around this series for its ten year run (with the exception of several television movies.)

After the end of Married...with Children, several more television movies followed for Sagal, and she was also a featured voice on the children's cartoon Recess. In 1999, Matt Groening, who created The Simpsons, cast her as one-eyed alien spaceship pilot Leela in his sci-fi cartoon comedy Futurama. The show developed a cult following but was cancelled four years later. No sooner had that door closed than she was cast as the wife of John Ritter in the sitcom 8 Simple Rules for Dating My Teenage Daughter in 2002.

Sagal is also an accomplished songwriter. In 1976 - while being a member of The Group With No Name - the group release the album "Moon Over Brooklyn", also perfoming backing vocals on the solo album by KISS Bassist Gene Simmons. On April 19th 1994, she released her first solo album called Well... . Ten years later, on June 1st 2004, she released her second album Room .

Sagal married Kurt Setter on October 2, 2004. Before that, she was married to Freddie Beckmeyer (1978 - 1981) and Jack White (November 26, 1993 - July 24, 2000) with whom she had two children.