Jenna O'Brien was born and raised in Boston among a large Irish Catholic family. She was strange as a child- hiding under the kitchen sink, eating milk-bones, randomly doing headstands. Her parents paid no attention to her quirkiness, which fueled her need for attention even more. Jenna did not start acting until she was a freshman at Bowdoin College where she focused on studying master comedians under Davis Robinson. She began taking Improv classes at ImprovBoston in 2008 and joined a house team shortly after. She performs regularly with the Friday Night ensemble at ImprovBoston. In her spare time, Jenna loves to paint, draw, grab a beer or go to a concery.

Jenna lives with her cat/lover, Sammy, in Somerville, MA.