Sherri M. Saum (born October 1, 1974) is an American actress. Saum is best known for her co-lead role as Lena Adams Foster in the Freeform drama series The Fosters (2013–18) as well as a subsequent guest star role in its spinoff Good Trouble (2019–present). She is also known for her television roles in Beggars and Choosers, Rescue Me and In Treatment, as well as for her roles in the daytime soap operas Sunset Beach and One Life to Live.