| Christopher Reeve | ... | Richard Collier |
| Jane Seymour | ... | Elise McKenna |
| Christopher Plummer | ... | William Fawcett Robinson |
| Teresa Wright | ... | Laura Roberts |
| Bill Erwin | ... | Arthur Biehl |
 | George Voskovec | ... | Dr. Gerald Finney |
| Susan French | ... | Older Elise |
| John Alvin | ... | Arthur's Father |
| Eddra Gale | ... | Genevieve |
| Audrey Bennett | ... | Richard's Date |
| William H. Macy | ... | Critic (as W.H. Macy) |
| Laurence Coven | ... | Critic |
| Susan Bugg | ... | Penelope |
| Christy Michaels | ... | Beverly |
| Ali Marie Matheson | ... | Student (as Ali Matheson) |
| George Wendt | ... | Student |
| Steve Boomer | ... | Hippie |
| Pat Billingsley | ... | Professor (as Patrick Billingsley) |
| Ted Liss | ... | Agent |
| Francis X. Keefe | ... | Desk Clerk |
| Taylor Williams | ... | Maitre D' |
| Noreen Walker | ... | Librarian |
| Evans Ghiselli | ... | Coin Shop Proprietor |
| Barbara Giovannini | ... | Tourist in Hall of History |
| Don Franklin | ... | Tourist in Hall of History |
| David Hull | ... | Hotel Manager |
| Paul Cook | ... | Doctor (as Paul M. Cook) |
| Victoria Michaels | ... | Maude |
| William P. O'Hagan | ... | Rollo |
| Maud Strand | ... | Marie |
| Bo Clausen | ... | Man in Elevator, in 1912 |
| James P. Dunnigan | ... | Second Man in Elevator, in 1912 |
| Sean Hayden | ... | Young Arthur, in 1912 |
| Hal Frank | ... | Stage Manager, in 1912 |
| Hayden Jones | ... | Man with Stage Manager, in 1912 |
| Val Bettin | ... | Director, in 1912 |
| Bruce Jarchow | ... | Bones, in 1912 |
| Ed Meekin | ... | Fisher, in 1912 |
| Erin Tomcheff | ... | Miss Hammond, in 1912 |
| J.J. Butler | ... | Prompter, in 1912 |
| Chukuma | ... | Bearded Stagehand, in 1912 |
| Michael Woods | ... | Dinner Guest, in 1912 |
| Jerry Kaufherr | ... | Maitre D', in 1912 |
| Don Melvoin | ... | Diamond Jim, in 1912 |
| Ann K. Irish | ... | Teacher, in 1912 |
| JoBe Cerny | ... | 2nd Day Desk Clerk, in 1912 (as Jo Be Cerny) |
| Richard Matheson | ... | Astonished Man - in 1912 |
| Audrie J. Neenan | ... | Maid in Play (1912) (as Audrie Neenan) |
| Tim Kazurinsky | ... | Photographer, in 1912 |
| Robert Swan | ... | Stagehand with Note, in 1912 (as Bob Swan) |
| rest of cast listed alphabetically: |
| Stan Adams | ... | Man In Library (uncredited) |
| Sandra Bogan | ... | Woman at Hotel (uncredited) |
| Steven Earl-Edwards | ... | (uncredited) |
