Sikora was born in Chicago, Illinois, to mother Barbara and father Albin, one of three boys, and lived in the Jefferson Park and Norwood Park neighborhoods. He is of Polish and Dutch descent. Sikora graduated from Notre Dame College Prep in 1994. He studied acting at Columbia College Chicago, where he earned his MA in theater.
Known for Shutter Island 2010 Grey's Anatomy 2005 Jack Reacher 2012 Lost 2004 ★ 5 Fear 2023
Rom Series ★ 8.3 Power Book IV: Force 2022
Tommy Egan Series ★ 6 Reasonable Doubt 2022
Bill Sterling Series ★ 8.2 Power Book II: Ghost 2020
Tommy Egan ★ 6 The Intruder 2019
Mike Series ★ 7.5 The Shivering Truth 2018
(voice) Series ★ 7.3 Maniac 2018
JC Series ★ 8.2 Ozark 2017
Frank Cosgrove Jr. Series ★ 6.3 The Player 2015
Dominic McCall Series ★ 8.3 True Detective 2014
Ginger Series ★ 7.7 Power 2014
Tommy Egan Series ★ 8.4 Chicago P.D. 2014
Kevin Bingham Series ★ 8 Banshee 2013
Matt Sharp ★ 6.5 Safe 2012
Vassily Docheski ★ 6.7 Jack Reacher 2012
James Barr Series ★ 7.1 Body of Proof 2011
Tom Hanson Series ★ 7.2 Unforgettable 2011
Robert Harlow ★ 8.2 Shutter Island 2010
Glen Miga ★ 6.6 Trust 2010
Rob Moscone Series ★ 7.8 Blue Bloods 2010
Mark Phelan Series ★ 8 Boardwalk Empire 2010
Hans Schroeder Series ★ 7.2 Dollhouse 2009
Terry Karrens Series ★ 8.2 White Collar 2009
Jonas Ganz Series ★ 7.6 The Good Wife 2009
Agent Norwich ★ 5.3 Night Skies 2007
Joe Sikora ★ 6.5 Charlie Wilson's War 2007
Chess Player Series ★ 8.2 Grey's Anatomy 2005
Shane Herman Series ★ 8.3 Criminal Minds 2005
Jimmy Baker Series ★ 8 Lost 2004
Co-Pilot ★ 6.7 Normal 2003
Wayne Applewood Series ★ 7.7 CSI: Miami 2002
Howard Benchley Series ★ 7.9 Monk 2002
Boz Harrelson Series ★ 7.2 Without a Trace 2002
Malcolm Neilus ★ 7.1 Ghost World 2001
Reggae Fan ★ 5.1 The Watcher 2000
Skater Series ★ 8 Law & Order: Special Victims Unit 1999
Jason Gambel Series ★ 7.9 Third Watch 1999
J.D. Hart ★ 6.6 My Best Friend's Wedding 1997
Stoner Guy #1 Series ★ 7.4 Early Edition 1996
Rick Williams Series ★ 7.8 ER 1994
Riley Series ★ 7.7 Frasier 1993
Man in Bar Series ★ 7.6 Dr. Quinn, Medicine Woman 1993
Guard #2 
