Ali Marsh (born Allison A. Marsh, January 30, 1970, in New York City, New York) is an American actress and writer who graduated from Brown University. She has been active since 1996, making her screen debut in The Mirror Has Two Faces (with Barry Levinson and Miranda Richardson), and has accumulated over 40 film and television credits. She is married to actor Fred Weller (since September 6, 2003) and they have one child. Her most notable film credits include Karen Abbott in Seinfeld (1997), Mom #1 in Mr. & Mrs. Smith (2005, with Brad Pitt and Angelina Jolie), Donna in Rabbit Hole (2010, with Nicole Kidman), George Reardon in The Ten (2007), Real Estate Broker in How to Be Single (2016, with Dakota Johnson and Rebel Wilson), and Sharon Romney in The Independent (2022). On television she is best known as Dr. Shelley Finkel in In Plain Sight (2008–2012, 10 episodes, USA), Blair Salz in Gypsy (2017, 5 episodes, FX, with Naomi Watts), and Allison Burnam in Bull (2016, CBS), with additional credits in Girls (2012, HBO), The Affair (2014, Showtime), Nurse Jackie (2009), Childrens Hospital (2012), Blue Bloods (2010), Billy & Billie (2015–2016, with Adam Brody), and multiple Law & Order series.