Ronald Joseph Livingston (born June 5, 1967) is an American actor. He is best known for playing Peter Gibbons in the 1999 film Office Space and Captain Lewis Nixon III in the 2001 miniseries Band of Brothers. Livingston's other roles include the films Swingers (1996), Adaptation (2002), The Conjuring (2013); and the television series Loudermilk, and Boardwalk Empire, on which he appeared in the fourth season.

Early life
Livingston was born in Cedar Rapids, Iowa, to Kurt Livingston, an aerospace/electronics engineer, and Linda (née Rinas), a Lutheran pastor. His younger brother, John, is also an actor; while his sister, Jennifer Livingston, and brother-in-law, Mike Thompson, are TV news personalities at WKBT-DT in La Crosse, Wisconsin.

Livingston attended Yale University, where he sang with The Whiffenpoofs and graduated in 1989, together with Anderson Cooper. 

Livingston first acted at Theatre Cedar Rapids after being introduced to the group during a school job shadowing. Livingston moved to Chicago and became involved in the local theater scene.