 | Kirk Alyn | ... | Superman / Clark Kent (as Superman) |
 | Noel Neill | ... | Lois Lane |
 | Tommy Bond | ... | Jimmy Olsen |
 | Carol Forman | ... | 'Spider Lady' |
 | George Meeker | ... | Henchman Driller |
 | Jack Ingram | ... | Henchman Anton |
 | Pierre Watkin | ... | Perry White |
 | Terry Frost | ... | Henchman Brock |
 | Charles King | ... | Henchman Conrad [Chs. 6-15] |
 | Charles Quigley | ... | Dr. Hackett [Chs. 6-15] |
 | Herbert Rawlinson | ... | Dr. Arnold Graham [Chs. 3, 9-11, 13-15] |
 | Forrest Taylor | ... | Prof. Arnold Leeds [Chs. 3-4] |
 | Stephen Carr | ... | Morgan [Chs. 3-4] |
 | Rusty Wescoatt | ... | Henchman Elton [Chs. 7-15] |
| rest of cast listed alphabetically: |
 | Fred Aldrich | ... | Policeman at Museum [Ch. 5] (uncredited) |
 | Phil Arnold | ... | Taxi Driver [Ch. 2] (uncredited) |
 | Jimmy Aubrey | ... | Wave Tracer [Ch.10] (uncredited) |
 | Robert Barron | ... | Ro-Zon, leader of Krypton [Ch. 1] (uncredited) |
 | Roy Butler | ... | Radio Operator (uncredited) |
 | James Carlisle | ... | Government Agent [Ch. 1] (uncredited) |
 | Virginia Carroll | ... | Martha Kent [Ch. 1] (uncredited) |
 | Ed Cassidy | ... | Eben Kent [Ch. 1] (uncredited) |
 | Jack Chefe | ... | Dupe [Ch. 14] (uncredited) |
 | Edmund Cobb | ... | Auto Mechanic [Ch. 10] (uncredited) |
 | Tom Coleman | ... | Government Agent [Ch. 1] (uncredited) |
 | George DeNormand | ... | Agent with Crandall [Ch. 3] (uncredited) |
 | Alan Dinehart III | ... | Clark as a small boy [Ch. 1] (uncredited) |
 | Frank Ellis | ... | Mine Security Guard [Ch. 2] (uncredited) |
 | William Fawcett | ... | Phoney News-Hawker [Ch. 7] (uncredited) |
 | Eddie Foster | ... | Fred Collier, Mining Engineer [Ch. 12] (uncredited) |
 | Jack George | ... | Railroad Workman [Ch. 1] (uncredited) |
 | Frank Hagney | ... | Car 1 Henchman [Chs. 8-9] (uncredited) |
 | Chuck Hamilton | ... | Prison Guard at siren [Ch. 6] (uncredited) |
 | Ralph Hodges | ... | Teenage Clark Kent [Ch. 1] (uncredited) |
 | Reed Howes | ... | Henchman Jackson [Ch. 8] (uncredited) |

| I. Stanford Jolley | ... | Sheriff [Chs. 11-12] (uncredited) |
 | Frank Lackteen | ... | Hawkins, the stoolie [Chs. 4-7] (uncredited) |

| Nelson Leigh | ... | Jor-El, father of Superman [Ch. 1] (uncredited) |
 | Tom London | ... | Old Timer at Mine [Ch. 2] (uncredited) |
 | George Magrill | ... | Bank Robber [Ch. 3] (uncredited) |
 | Knox Manning | ... | Narrator (uncredited) |
 | Wheeler Oakman | ... | Dr. Fredrick Larkin [Ch. 11] (uncredited) |
 | Frank O'Connor | ... | Spectator at fire [Ch.2] / Police Chief Forman [Ch. 15] (uncredited) |
 | Eddie Parker | ... | Truck Driver [Chs. 11-12] (uncredited) |
 | Leonard Penn | ... | Electronics Store Owner / Henchman [Ch. 14] (uncredited) |
 | Stanley Price | ... | Crandall the Thug [Ch. 3] (uncredited) |
 | Gene Roth | ... | Carson the Conductor [Ch. 2] (uncredited) |
 | Charles Schaeffer | ... | Thug Holding Lois [Ch. 5] (uncredited) |
 | Charles Sherlock | ... | Daily Planet Worker [Chs. 4, 6-7, 11 & 14] (uncredited) |
 | Paul Stader | ... | Henchman Irwin [Ch. 8] (uncredited) |
 | Bert Stevens | ... | Man Sent for Help at RR Station [Ch. 1] (uncredited) |
 | Emmett Vogan | ... | Secretary of National Security [Chs. 3, 8] (uncredited) |
 | Luana Walters | ... | Lara, mother of Superman [Ch. 1] (uncredited) |
 | Wally West | ... | Spectator at fire [Ch. 2] / State Trooper [Ch.9] (uncredited) |
 | Al Wyatt Sr. | ... | Thug Holding Lois [Ch. 5] (uncredited) |
 | Peggy Wynne | ... | Gloria the Switchboard-Receptionist - Chs. 2, 3, 11 (uncredited) |
This is a great serial. What people tend to forget when watching it today, is that it was made in 1948 and was aimed at the Saturday matinee crowd.
The special effects, to be sure, are primitive by today's standards, but take a closer look. Remember this was 1948. The opening sequence and Superman's flying effects were achieved through some excellent animation.
Don't forget that Superman IS a comic book character. The transition from live action to animation in the flying sequences, is performed seamlessly and realistically. I thought that this was pretty innovative for its' time.
Kirk Alyn was born to play Superman. He gives a realistic and credible performance as both Superman and Clark Kent. The diminutive Noel Neill makes an excellent Lois Lane, girl reporter, Timmy Bond (Formerly "Butch" of the Our Gang comedies) is good as Jimmy Olsen and veteran Pierre Watkin is suitably cranky as Perry White.
Carol Forman brings a cold and icy sexiness to the role of the Spider Lady, Superman's chief nemesis. Serial veterans Charles Quigley, Charles King, Terry Frost and Rusty Wescoatt round out the cast in various villain roles.