Detective Virgil Tibbs
Sidney Poitier
Police Chief Bill Gillespie
Rod Steiger
Sam Wood
Warren Oates
Mrs. Colbert
Lee Grant*
Delores Purdy
Quentin Dean
Deputy Courtney
Peter Whitney
Purdy, Delores' brother
James Patterson
Mayor Webb Schubert
William Schallert
Mrs. Leslie Colbert
Lee Grant
Eric Endicott
Larry Gates
Ralph
Anthony James
Harvey Oberst
Scott Wilson
Packy Harrison
Matt Clark
Mr. Purdy
James Patterson
Mama Caleba
Beah Richards
H.E. Henderson
Kermit Murdock
Philip Colbert (uncredited)
Jack Teter
Jess
Khalil Bezaleel
Watkins
Larry D. Mann
McNeil
William C. Watson
Ulam
Arthur Malet
"Shagbag" Martin
Timothy Scott
Dr. Stuart
Fred Stewart
Dennis
Michael LeGlaire
Ted Appleton (uncredited)
Alan Oppenheimer
Shagbag
Timothy Scott
Charles Hawthorne
Eldon Quick
Shuie
Stuart Nisbet
Endicott's Butler
Jester Hairston
Arnold Fryer
Peter Masterson
1st Tough
Phil Adams
Mark Crowell
Philip Garris
2nd Tough
Nikita Knatz
Clerk
Sam Reese
Deputy
Clegg Hoyt
Baggage Master
David Stinehart
Conductor
Buzz Barton
Undetermined Role
Warren Kenner
James Patterson