Actors in both Riverdale and Smallville
68 actors have appeared in both Riverdale and Smallville, across 354 episodes. The most-credited is Martin Cummins, Tom Keller, Mayor Keller in Riverdale and Dr. Lawrence Garner in Smallville.
| Actor | In Riverdale | In Smallville | Eps | Eps |
|---|---|---|---|---|
| Martin Cummins | Tom Keller, Mayor Keller | Dr. Lawrence Garner | 78 | 3 |
| Alvin Sanders | Pop Tate | Dale Ross, Dr. Klein | 70 | 2 |
| Lochlyn Munro | Hal Cooper | Orlando Block | 51 | 1 |
| Ryan Robbins | Frank Andrews | Louis Leery Jr. | 39 | 1 |
| Malcolm Stewart | Dr. Freiderich Werthers, Francis Dupont | Dr. Otis Ford, Dr. Sinclair, Jim Melville | 26 | 3 |
| Alaina Huffman | Twyla Twyst | Dinah Lance / Black Canary | 7 | 6 |
| Barclay Hope | Clifford Blossom, Claudius Blossom | Dr. Anthony Bright, Doctor | 29 | 3 |
| Colin Lawrence | Coach Clayton | Agent Stocker, Captain Nichols, Doctor | 6 | 3 |
| Sharon Taylor | Tia Margot | Faora | 1 | 7 |
| Fred Henderson | Governor Dooley | Dr. Langston | 3 | 4 |
| Greyston Holt | Glen Scot | Tobias Rice | 10 | 1 |
| Jerry Wasserman | Mr. Lazenby | Dr. Yaeger Scanlan | 1 | 4 |
| Ron Selmour | Toots Sweet | Wendell Connelly | 1 | 3 |
| William MacDonald | Principal Featherhead, Warden Norton | Walt Masterson | 19 | 1 |
| Alison Araya | Janet Weiss | Nurse | 12 | 1 |
| Beverley Breuer | Sister Woodhouse | Rose Greer | 10 | 1 |
| Chris Shields | Mr. Logan | Courier, EMT #1, Reporter | 1 | 4 |
| Mackenzie Gray | Dr. Curdle | Dr. Alistair Kreig, Lex Luthor Clone | 3 | 2 |
| Juan Riedinger | Dodger Dickenson | Lowell Wilson | 6 | 1 |
| Kwesi Ameyaw | Dr. Masters | Darius | 2 | 3 |
Cast data from TVmaze, licensed CC BY-SA 4.0.