Dorthea Lauren Allegra Lapkus (born September 6, 1985) is an American actress and comedian who portrayed Susan Fischer in the Netflix original series Orange Is the New Black and Jess in HBO's Crashing. She has also made appearances on such television shows as Jimmy Kimmel Live!, The Middle, Hot in Cleveland, and @midnight. She has appeared on many podcasts, including Comedy Bang! Bang!, improv4humans, and her own podcast With Special Guest Lauren Lapkus. She was a main cast member on the TBS original sitcom Clipped.
Lapkus was born in Evanston, Illinois, of half Lithuanian and half Greek/Serbian descent. Upon graduation, she moved to New York City for a year where she got involved with Upright Citizens Brigade Theatre. In 2015, Lapkus and the cast won the Screen Actors Guild Award for Outstanding Performance by an Ensemble in a Comedy Series.