Polly Dean Holliday (born July 2, 1937) is an American retired actress who appeared on stage, television and in film.

[3] In New York City, she sang in the Grace Church (Episcopal) Choral Society in Greenwich Village and ran a chamber music series there called the Willow Ensemble (1995–2008).

[4] In 1983, Holliday joined the cast of the CBS-TV sitcom Private Benjamin as a temporary replacement for series regular Eileen Brennan, who was recovering from serious injuries after being struck by a car.

[4] Holliday also made appearances on television shows such as The Golden Girls, where she played Rose Nylund's blind sister Lily, in a recurring role as Jill Taylor's mother on Home Improvement, and a regular character on The Client.

Holliday's notable film roles include appearances in All the President's Men, Moon over Parador, Mrs. Doubtfire, The Parent Trap (1998), and the 1984 hit Gremlins, in which she played Ruby Deagle and won the Saturn Award for Best Supporting Actress.

On the Broadway stage, she has appeared in revivals of Arsenic and Old Lace (1986) as Martha Brewster, one of the dotty, homicidal, sweet old aunties; Cat on a Hot Tin Roof (1990), for which she was nominated for a Tony Award for her portrayal of Big Mama; and Picnic (1994).