Born as Sandra Martin, Sandy Martin is an English actress, producer, writer and director with more than 60 film credits. Her acting career started when she was 15 years old and some of her most notable projects include 48 Hrs as a policewoman, Real Genius’ Mrs. Meredith, and  Janice in Barfly. Sandy Martin has also appeared in film and TV projects such as Defenseless, Nip/Tuck, China Moon, It's Always Sunny in Philadelphia, Speed, Big Love, Napoleon Dynamite, Hot Tamale and Marley & Me.

Apart from being an actress, Sandy Martin is one of the founding members of many theatrical companies in Los Angeles and New York City. In 2012, Sandy Martin is estimated to be worth $2 million.