Martha Lavey is an actress, best known for the film, Cold Justice.

Theatre credits include Off-Broadway, in Mill Fire (Apple Corps Theatre); and regionally, as Tress in This Way West, voice of Old Lady in Good People, Letitia Pettibone/Nurse in The March, Librarian in Middletown, Nell in Endgame, Aunt Chris in Up, Elizabeth Hardy in Good Boys and True, Grandmother's Voice in The Sparrow, Toinette in Love-Lies-Bleeding, Lily in The House Of Lily, Livia Majeski in Valparaiso, Judy in The Designated Mourner, Alex's Mother in A Clockwork Orange, Susan in Talking Heads, and Lemon in Aunt Dan and Lemon (Steppenwolf Theatre). 

Martha is an ensemble member and the former Artistic Director at Steppenwolf Theatre in Chicago.