Marcia Strassman (born April 28, 1948 in New York City, United States) is an American actress best known for her roles as Julie Kotter in the TV sitcom Welcome Back, Kotter and Diane Szalinski in the 1989 feature film Honey, I Shrunk the Kids and its first sequel.
In 1967 she became a recording artist for UNI Records. Her debut single 'The Flower Children' was a top 40 hit in many west coast US markets, hitting #4 in San Diego and #2 in San Francisco, but the track failed to break out nationally, stalling at #103. The followup single 'The Groovy World of Jack & Jill' charted in Denver but virtually nowhere else.
Returning to acting after a gap of a few years Strassman landed the recurring role as nurse Margie Cutler in the earliest episodes of M*A*S*H. A regular character who was also shown in the opening titles sequence when the series began, she disappeared from the show and was cut from the title sequence after appearing in just six episodes.
She landed her best known role in Welcome Back Kotter in 1975. The series lasted for four years. Strassman also appeared as a guest star on such 70s fare as The Rockford Files and other prime time dramas. Between 1989-1990 she had a costarring role in the 21 Jump Street spinoff Booker.
Ms Strassman is frequently mistaken for WKRP in Cincinnati cast member Jan Smithers to whom she bears a close resemblance.