- Richard Thomas - Jim Warner
- Fay Hauser - Carrie Barden
- Brian Stokes Mitchell - John Dolan
- Debbi Morgan - Elizabeth Harvey
- Kathleen Doyle - Lucy Damson
- Ja'net DuBois - Sally Harvey
- Slim Gaillard - Sam Wesley
- Harry Morgan - Bob Campbell
- Roger E. Mosley - Lee Garnet
- Stan Shaw - Will Palmer
- Irene Cara - Bertha Palmer Haley
- James Daly - R.S.M. Boyce
- Ossie Davis - Dad Jones
- Ruby Dee - Queen Victoria Haley
- Dorian Harewood - Simon Haley
- Kene Holliday - Detroit
- George Voskovec - Mr. Goldstein
- Hal Williams - Aleck Haley
- Bever-Leigh Banfield - Cynthia Palmer
- E. Lamont Johnson - Frank Warner, age 20
- Bernie Casey - Bubba Haywood
- Pam Grier - Francey
- Rosey Grier - Big Slew Johnson
- Gerald S. O'Loughlin - Capt. Bowker
- Percy Rodriguez - Boyd Moffatt
- John Rubinstein - Lt. Hamilton Ten Eyck
- Diana Douglas - Mrs. Andy Warner
- Jason Wingreen - Judge Quartermain
- Maidie Norman - Sister Scrap Scott
- Bruce French - Calloway
- Robert Culp - Lyle Pettijohn
- Dina Merrill - Mrs. Hickinger
- Brock Peters - Ab Decker
- Beah Richards - Cynthia Palmer
- Paul Winfield - Dr. Horace Huguley
- Lynn Hamilton - Cousin Georgia Anderson
- Kristoff St. John - Alex Haley, age 12
- Logan Ramsey - D.L. Lewis
- Dennis Fimple - Sheriff Duffy
- Debbie Allen - Nan Branch Haley
- Damon Evans - Alex Haley, ages 17-25
- Andy Griffith - Cmdr. Robert Munroe
- Diahann Carroll - Zeona Haley
- Rafer Johnson - Nelson
- Carmen McRae - Lila
- John Hancock - Scotty
- Della Reese - Mrs. Lydia Branch
- Telma Hopkins - Daisy
- Milt Kogan - Mel Klein
- Barbara Barrie - Dodie Brattle
- Marlon Brando - George Lincoln Rockwell
- James Broderick - Dr. Lewis
- Lee Chamberlin - Odile Richards
- Michael Constantine - Dr. Vansina
- Norman Fell - Bernie Raymond
- Al Freeman Jr. - Malcolm X
- James Earl Jones - Alex Haley
- Claudia McNeil - Sister Will Ada
- Linda Hopkins - Singer
- Bobby Short - Pianist
- Jane Rose - Mrs. Bullfinch
- Howard Rollins - George Haley
- Johnny Sekka - Ebou Manga
- Kim Fields - Lydia Haley
- Michael Morgan - Teenage Deputy
- Alex Haley
- Stan Margulies
- David L. Wolper
- Gerald Fried
Georg Stanford Brown interpreta a Tom Harvey en la serie.
Olivia de Havilland interpreta a Mrs. Warner en la serie.
Henry Fonda interpreta a Col. Frederick Warner en la serie.
Paul Koslo hace el papel de Earl Crowther.
Avon Long hace el papel de Chicken George Moore.
Lynne Moody interpreta a Irene Harvey en la serie.
Greg Morris hace el papel de Beeman Jones.
Marc Singer interpreta a Andy Warner en la serie.
Richard Thomas interpreta a Jim Warner en la serie.
Fay Hauser interpreta a Carrie Barden en la serie.
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