Sidney Poitier
Virgil Tibbs

Barbara McNair
Valerie Tibbs

Gerald S. O'Loughlin
Jack Pecora

Sheree North
Mrs. Morgan

Fred Beir
Bob Alford

Allen Garfield
Benjy

Bernie Hamilton
Lt. Jessop

Graham Jarvis
William Martin

Raúl Juliá
Juan Mendoza

Ron O'Neal
Joe Peralez

James A. Watson, Jr
Stacy Baker

Charles H. Gray
George Morgan

Jarion Monroe
Larry French

Daniel J. Travanti
Sgt. Chassman

Billy Green Bush
Dave Thomas

Max Gail
Rudy

Ross Hagen
Chet

Paul Jenkins
Tony

John Lasell
Zach Mills

Garry Walberg
Capt. Stacy

Demond Wilson
Charlie Blossom

Richard C. Adams
Dan

Johnny Haymer
John Bishop

John Alvin
Forensic Officer (uncredited)

Oscar Beregi Jr.
Andre (uncredited)