Jason Beghe Sergeant Hank Voight Actor Sophia Bush Detective Erin Lindsay Actor Patrick Flueger Officer Kyle Ruzek Actor LaRoyce Hawkins Officer Kevin Atwater Actor Elias Koteas Detective Alvin Olinsky Actor Jon Seda Detective Antonio Dawson Actor Jesse Lee Soffer Detective Jay Halstead Actor Marina Squerciati Officer Kim Burgess Actor Amy Morton Desk Sgt. Trudy Platt Actor Brian Geraghty Officer Sean Roman Actor Danny Pino Nick Amaro Guest Star Kelli Giddish Amanda Rollins Guest Star Markie Post Barbara 'Bunny' Fletcher Guest Star Mariska Hargitay Olivia Benson Guest Star Lou Taylor Pucci Teddy Courtney Guest Star Kevin J. O'Connor Commander Fischer Guest Star Onata Aprile Amy Guest Star Lorena Diaz Nancy Moreno RN Guest Star Brian Boland Sam Whiting Guest Star Lamar Barnes Martin Wyatt Guest Star Dick Wolf Executive Producer Matt Olmstead Executive Producer Michael Brandt Executive Producer Derek Haas Executive Producer Peter Jankowski Executive Producer Danielle Gelber Executive Producer Joe Chappelle Executive Producer