All 56 actors in both Bonanza and Star Trek
56 actors have appeared in both Bonanza and Star Trek, across 510 episodes. The most-credited is James Doohan, Bill Collins, Colonel's Man in Bonanza and Lt. Cmdr. Montgomery "Scotty" Scott, Mirror Scotty, Sargon in Star Trek.
| Actor | In Bonanza | In Star Trek | Eps | Eps |
|---|---|---|---|---|
| James Doohan | Bill Collins, Colonel's Man | Lt. Cmdr. Montgomery "Scotty" Scott, Mirror Scotty, Sargon | 2 | 64 |
| DeForest Kelley | Tully, Captain Moss Johnson | Dr. Leonard Horatio "Bones" McCoy | 3 | 24 |
| Majel Barrett Roddenberry | Belle Ganther | Nurse Christine Chapel, Number One | 1 | 25 |
| Rudy Doucette | Townsman, Juror, Trial Spectator | Staff Member | 9 | 1 |
| John Harmon | Rider, Frank Thomas, McCray | Rodent, Tepo | 7 | 2 |
| Richard Evans | Billy Wilcox, Ellis Watson, John | Isak | 3 | 1 |
| Charles Dierkop | Sawyer, Shorty | Morla | 2 | 1 |
| Diana Muldaur | Mary Roman | Dr. Anne Mulhall, Dr. Miranda Jones | 1 | 2 |
| Frank Overton | Amos Crenshaw, Capt. Matthew White | Elias Sandoval | 2 | 1 |
| Kathie Browne | Ellen Henry, Margie Owens | Deela | 2 | 1 |
| Michael Forest | Wabuska, Young Wolf | Apollo | 2 | 1 |
| Robert Lansing | Jed Trask, John Dundee | Gary Seven | 2 | 1 |
| Susan Oliver | Leta Malvet | Vina | 1 | 2 |
| Antoinette Bower | Martha Cartwright Dorcas | Sylvia | 1 | 1 |
| Gene Lyons | Taylor Daniels | Ambassador Robert Fox | 1 | 1 |
| Lou Antonio | Davey | Lokai | 1 | 1 |
| Marianna Hill | Dolores Tenino | Dr. Helen Noel | 1 | 1 |
| Mariette Hartley | Lola Fairmont | Zarabeth | 1 | 1 |
| Michael Dunn | George Marshall | Alexander | 1 | 1 |
| Paul Fix | Buford Sturgis | Dr. Piper | 1 | 1 |
| Robert Sampson | Bill Winters | Sar 6 | 1 | 1 |
| Sally Kellerman | Lotta Crabtree | Dr. Elizabeth Dehner | 1 | 1 |
| Stanley Adams | Sheriff Tate | Cyrano Jones | 1 | 1 |
| Steve Ihnat | Mr. Ganns | Garth of Izar | 1 | 1 |
| Ted Gehring | Bart Younger | Second Policeman | 1 | 1 |
| Warren Stevens | Owen Driscoll | Rojan | 1 | 1 |
| Willard Sage | Marshal Taylor | Thann | 1 | 1 |
| Dick Cherney | Townsman | Council Member, Passerby on Sidewalk | 2 | 2 |
| Barbara Luna | Cayetena Losaro | Lt. Marlena Moreau, Mirror Marlena | 1 | 1 |
| Bart La Rue | Walters | Announcer, Guardian, Newscaster | 1 | 3 |
| Charles Maxwell | Jack Groat, Krug | Virgil Earp | 2 | 1 |
| Glenn Corbett | Reverend Paul Watson | Zefram Cochrane | 1 | 1 |
| Ian Wolfe | Ed Baxter | Mr. Atoz, Septimus | 1 | 2 |
| Jason Evers | J.D. Lambert | Rael | 1 | 1 |
| Jeff Corey | Frank Brennan | Plasus | 1 | 1 |
| Jon Lormer | Dr. Riley | Old Man, Tamar | 1 | 2 |
| Leonard Nimoy | TBD | Mirror Spock | 1 | 1 |
| Michael Dante | Miguel Ortega | Maab | 1 | 1 |
| Ned Romero | White Wolf | Krell | 1 | 1 |
| William Bramley | Dan Fowler | Policeman | 1 | 1 |
| Gene Dynarski | Hostler, Wheeler | Ben, Krodak | 2 | 2 |
| Morgan Woodward | Sheriff Biggs | Captain Ronald "Ron" Tracey, Dr. Simon Van Gelder | 1 | 2 |
| Erik Holland | Cleve Ferguson | Ekor | 1 | 1 |
| Harry Townes | Tom Edwards | Reger | 1 | 1 |
| Ken Lynch | Collier | Vanderberg | 1 | 1 |
| Eddie Hice | Carnival Attendee | Security Guard | 1 | 2 |
| Celia Lovsky | Dona Theresa Esperanza | T'Pau | 1 | 1 |
| Garry Walberg | Bower | Hansen | 1 | 1 |
| John Abbott | Zachariah Wickham | Ayelborne | 1 | 1 |
| Rex Holman | Floyd Brennan, Otie | Morgan Earp | 1 | 1 |
| Arthur Batanides | Spiro | D'Amato | 1 | 1 |
| Cal Bolder | TBD | Keel | 1 | 1 |
| Paul Carr | McNeil | Lt. Lee Kelso | 1 | 1 |
| William O'Connell | Broadside poster | Thelev | 1 | 1 |
| Anthony Caruso | Chief Winnemucca | Bela Oxmyx | 1 | 1 |
| Hal Baylor | Tom Cole | Policeman | 1 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.