Paul Jeffrey Byrne (born December 15, 1974) is an American film and television actor. He 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).

Early life and education
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.

A graduate of Boston College with a double major in finance and theater 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.