Paul Jeffrey Byrne (born December 15, 1974) is an American character actor. Byrne is best known for his roles as Nicky "Rugrat" Koskoff in the Martin Scorsese film The Wolf of Wall Street (2013) and Bolin on Nickelodeon's animated series The Legend of Korra (2012–2014).
He resides in Los Angeles with his wife, Jaime, who was the executive director in Los Angeles and Beverly Hills for health care services and fund-raising for the Muscular Dystrophy Association and now president of Jaime Byrne Events, LLC. Byrne and his wife have two daughters and one son.
Byrne was born in Maplewood, New Jersey, to Emma N. (Ferraro) and Paul I. Byrne Jr., and was raised in Old Tappan, New Jersey, where he graduated from Northern Valley Regional High School at Old Tappan in 1992.A graduate of Boston College with a double major in finance and theatre and an MFA from The Theatre School at DePaul University, Byrne was on his way to becoming an investment banker out of college when a drama teacher at BC convinced him to follow his passion for acting.