Gillian Vigman (born January 28, 1972) is an American actress and comedian. She is known for her roles in the films The Hangover (2009), The Hangover Part II (2011), and The Hangover Part III (2013), as well as the television series The Mindy Project (2012-2017) and The Good Place (2016-2020).

Vigman was born in New Jersey and raised in New York City. She attended the University of Pennsylvania, where she studied theater. After graduating, she moved to Los Angeles to pursue a career in comedy.