| Dale Robertson | Ben Calhoun / ... (43 episodes, 1966-1968) |
| Gary Collins | Dave Tarrant / ... (16 episodes, 1966-1968) |
| Robert Random | Barnabas Rogers / ... (15 episodes, 1966-1967) |
| Roger Torrey | Nils Torvald (8 episodes, 1966-1967) |
| Woodrow Parfrey | Holmes (4 episodes, 1966-1967) |
| Ellen Burstyn | Julie Parsons (3 episodes, 1967-1968) |
| Duane Grey | Bartender / ... (3 episodes, 1966-1967) |
| Martin Ashe | Engineer / ... (3 episodes, 1967) |
| Joel Fluellen | Miguel / ... (2 episodes, 1966-1968) |
| James Almanzar | General Sherman / ... (2 episodes, 1966-1967) |
| William Bramley | Ferris / ... (2 episodes, 1966-1967) |
| Royal Dano | Captain Hugh Sinclair / ... (2 episodes, 1966-1967) |
| Jock Gaynor | Cabot / ... (2 episodes, 1966-1967) |
| Richard Hale | Chief Saul / ... (2 episodes, 1966-1967) |
| Rex Holman | Minstrel (2 episodes, 1966-1967) |
| James Hong | Ching Lee / ... (2 episodes, 1966-1967) |
| Steve Ihnat | Luke Joy / ... (2 episodes, 1966-1967) |
| Strother Martin | Applegate / ... (2 episodes, 1966-1967) |
| David Sheiner | Brady / ... (2 episodes, 1966-1967) |
| Dean Smith | Gunfighter / ... (2 episodes, 1966-1967) |
| Warren Vanders | Lou / ... (2 episodes, 1966-1967) |
| Tony Young | Red Shirt / ... (2 episodes, 1966-1967) |
| John Pickard | Bulwer / ... (2 episodes, 1966) |
| Paul Sorensen | Connoily (2 episodes, 1966) |
| Chuck Webster | Telegrapher / ... (2 episodes, 1966) |
| Charles Horvath | Sam / ... (2 episodes, 1967) |
| Susan Howard | Bess Hennings / ... (2 episodes, 1967) |
| Anna Karen | Amy Hobart / ... (2 episodes, 1967) |
| Eddie Little Sky | Big George / ... (2 episodes, 1967) |
