Martha Miriam Greenhouse (June 14, 1921 – January 5, 2013) was an American stage, film and television actress, who also served as an actors' union leader.

The Omaha, Nebraska-born actress appeared both on-and off-Broadway. Her film credits included The Stepford Wives, Bananas, Daniel, and Tomorrow Night. She appeared on such television and soap opera series as Route 66, Car 54, Where Are You?, Law & Order, The Jackie Gleason Show, The Phil Silvers Show,Ryan's Hope, and Law & Order.