Lynn Harriette Cohen (née Kay; August 10, 1933 – February 14, 2020) was an American actress known for her roles in film, television and theater.

She was particularly known for her role as Magda in the HBO series Sex and the City, which she also played in the 2008 film of the same name and its 2010 sequel, as well as for portraying Mags in The Hunger Games: Catching Fire and Mrs. Litvak in The Vigil.