Tom Koby (1 episode)

Marv

Gary

Russell

Mr. Barnes

Don Hooper (1 episode)

Holt

Deputy Jack Garrity (2 episodes)

Joe McCarthy (5 episodes)

James McCord (5 episodes)

Wild Bill Hancock (16 episodes)

Detective Sal Rizoli

Dan Osborne (1 episode)

Deke Slayton (9 episodes)

Father Rose

Kurch

Officer Stablitzky (1 episode)

Dennis Kole (1 episode)

Tim Rutten (4 episodes)

Bobby Dwyer (25 episodes)

Charlie

Larry Rooney

Lt. Nelson

Mike

Det. Tom Lange (5 episodes)

Frank's Dad

Harold (1 episode)

Detective Gerry Coventry (1 episode)

Harry Jannerone (1 episode)

Cory Sampson (1 episode)

Dennis Halsey (1 episode)

Major Smith

Bill Tattenger (1 episode)

Tom Cole (1 episode)

James McCloon (1 episode)

Brian Dempsey (1 episode)

Father Tim (1 episode)

Andy Bellefleur (80 episodes)

Andrew Gleason (1 episode)

Ray Galuski (2 episodes)

Murtaugh (1 episode)

Huey Farrell (1 episode)

Detective Paul Browning (1 episode)

Lou Destefano (3 episodes)

Larry Pearce

(1 episode)

Commandant Vandegrift

Dodd (7 episodes)

Chef

Mr. Foye (1 episode)

Cop #1

Ted Bryar (1 episode)

Irving Klaw

Dan

Olan Horne

Leeland 'Lee' Nickel (9 episodes)

(4 episodes)

Bartender

Frank Sobotka (12 episodes)

Teddy

Ernie

James Melancon

Bob Cerv

Bad Eye

Paul

Paul

VTA - Carpenter

Ace

Jacko

Fred Yokas (52 episodes)

Simkins

Machine

Larry Ives

Gettys

Jerry

Konrad

Ivan Dubov

Phil

Tony Baby Shark

(1 episode)

Homeless David (1 episode)

Mickey Scott (1 episode)

Sergeant in Wheelchair (1 episode)

Jack Costa (1 episode)