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.
The Watcher
As Skater
Fear
As Rom
Night Skies
As Joe Sikora
Normal
As Wayne Applewood
Safe
As Vassily Docheski
Jack Reacher
As James Barr
My Best Friend's Wedding
As Stoner Guy #1
Charlie Wilson's War
As Chess Player
White Alligator
As Brad Paul
Shutter Island
As Glen Miga
Trust
As Rob Moscone
The Intruder
As Mike
Ghost World
As Reggae Fan
That's Harassment
As Him
Pants on Fire
As Wayne
Atypical Pirate
CSI: Miami
As Howard Benchley
Power Book IV: Force
As Tommy Egan
Grey's Anatomy
As Shane Herman
Dollhouse
As Terry Karrens
Power Book II: Ghost
As Tommy Egan
Blue Bloods
As Mark Phelan
White Collar
As Jonas Ganz
Body of Proof
As Tom Hanson
Banshee
As Matt Sharp
The Player
As Dominic McCall
Unforgettable
As Robert Harlow
True Detective
As Ginger
Monk
As Boz Harrelson
Frasier
As Man in Bar
Teenage Euthanasia
Power
As Tommy Egan
Law & Order: Special Victims Unit
As Jason Gambel
The Shivering Truth
As (voice)
Sherri
As Self - Guest
Chicago P.D.
As Kevin Bingham
ER
As Riley
Criminal Minds
As Jimmy Baker
Without a Trace
As Malcolm Neilus
Maniac
As JC
Boardwalk Empire
As Hans Schroeder
Ozark
As Frank Cosgrove Jr.
The Good Wife
As Agent Norwich
Third Watch
As J.D. Hart
Dr. Quinn, Medicine Woman
As Guard #2
