Mark Feuerstein (; born June 8, 1971) is an American actor. He had an early, recurring role in several episodes of Caroline in the City, playing the title character's new boyfriend, and later gained notice in a guest appearance in an episode of Season 2 of Sex and the City. He went on to appear in TV series The West Wing (2001–2005), Royal Pains (2009–2016), Prison Break (2017), and co-wrote, co-produced as well as starred in the short-lived CBS sitcom 9JKL. In 2022, he received a Children's and Family Emmy Award for Outstanding Lead Performance nomination for his work in The Baby-Sitters Club.
