All 54 actors in both Hart to Hart and Three's Company
54 actors have appeared in both Hart to Hart and Three's Company, across 280 episodes. The most-credited is Jordan Charney, Mr. Flowers in Hart to Hart and Frank Angelino, Mr. Layton in Three's Company.
| Actor | In Hart to Hart | In Three's Company | Eps | Eps |
|---|---|---|---|---|
| Jordan Charney | Mr. Flowers | Frank Angelino, Mr. Layton | 1 | 12 |
| Gino Conforti | Hy Stoner | Felipe | 1 | 6 |
| Peter Mark Richman | Arthur Horton, Owen Grant | Reverend Snow | 2 | 3 |
| Keene Curtis | Alden Kendra, Frank Kruger | Andrew Gainer, Dr. Todson | 2 | 2 |
| Rod McCary | Halsey Matthews, Norman Parker | Bill Martin, Gregg Halliday | 2 | 2 |
| John Fiedler | Arnold | Morris Morris | 2 | 1 |
| John McCook | Damian / Dr. Porter | Alan, Doug Cooper | 1 | 2 |
| John Reilly | Billingsley, Jess | Dr. Malcolm Kenderson | 2 | 1 |
| Karen Austin | Karen Shields | Denise, Jennifer | 1 | 2 |
| Lois Hamilton | Inga | Katy Williams, Rita | 1 | 2 |
| Melanie Vincz | Melanie | Girl, Sylvia | 1 | 2 |
| Michael Alldredge | Lt. Harry Moss | Sam | 2 | 1 |
| William Cort | Mark Braverman | Dr. Porter, Mr. Sneff | 1 | 2 |
| Floyd Levine | Lieutenant Beckerman | Security Officer | 1 | 1 |
| George O. Petrie | Dr. Bedoff | Mr. Williams | 1 | 1 |
| Lucinda Dooling | Ellen | Diane | 1 | 1 |
| Macon McCalman | Dr. Harry Capello | Roland Wood, Mr. Penrose | 1 | 3 |
| Parley Baer | Constantine Wainwright | Bert Landers | 1 | 1 |
| Philip Charles MacKenzie | Wallace | Roger | 1 | 1 |
| Roger C. Carmel | Walter Brent | Merl Denker | 1 | 1 |
| Shera Danese | Carla | Barmaid | 1 | 1 |
| Sue Ane Langdon | Laura | Aunt Becky | 1 | 1 |
| Dick O'Neill | Lt. Warren | Walter Nessle | 2 | 1 |
| Georgann Johnson | Jeannie, Mrs. Capello | Mrs. Tripper | 2 | 1 |
| J. Victor Lopez | Bartender, Sito | Manuel | 2 | 1 |
| Simone Griffeth | Pamela Granville, Susan Stockwood | Nancy Norwood | 2 | 1 |
| Jacque Lynn Colton | Gina Halstead, Mrs. Hopkins | Bernice, Plump Lady | 2 | 2 |
| Albert Carrier | Croupier | Maurice | 1 | 1 |
| Claudette Nevins | Senora Piranda | Barbara | 1 | 1 |
| Deborah Tranelli | Jana | Jessica Barrish | 1 | 1 |
| Donald Petrie | Dixon | Officer Jim Bolton | 1 | 1 |
| Gertrude Flynn | Old Lady | Mrs. Peabody | 1 | 1 |
| Herman Poppe | Lucas | Wally | 1 | 1 |
| Hope Clarke | Teacher | Second Nurse | 1 | 1 |
| Hugh Gillin | Dr. Gastone | Mr. Alden | 1 | 1 |
| Marie Laurin | Model | Denise | 1 | 1 |
| Michael Ensign | George Wiesenkopf | Doctor | 1 | 1 |
| Murray Matheson | Martin Hyde-Jones | Roger | 1 | 1 |
| Rhonda Shear | Eva | Pretty Girl | 1 | 1 |
| Sally Kemp | Angie Barton | Joanna Latham | 1 | 1 |
| Vernon Weddle | Stratham | Mr. Weddle | 1 | 1 |
| Glenn Ash | Sheriff Jelks | Hearty Man, Man | 1 | 2 |
| Henry Sutton | Cooper O'Keefe, Maitre D' | Minister | 2 | 1 |
| Emory Bass | Mr. Pond | Maitre D' | 1 | 1 |
| Gerald Hiken | Walter Levitt | Brody | 1 | 1 |
| Judith-Marie Bergan | Michelle "Mike" Saunders | Gail Kenderson | 1 | 1 |
| Paul Sylvan | Joey Armstrong | Biff Bower | 1 | 1 |
| Robert Lussier | Watson | Walter Johnson | 1 | 1 |
| Paul Marin | Carleton Withers, Dr. Colby | Mr. Peabody | 2 | 1 |
| Gary Hudson | Hairdresser #1 | Jerry | 1 | 1 |
| Sarah Marshall | Mrs. Wentworth-Hays | Madame Clara | 1 | 1 |
| Curtis Taylor | Braxton | Pete | 1 | 1 |
| Cynthia Harris | Amanda | Mrs. Layton | 1 | 1 |
| Marsha Haynes | Kathy | Jennifer Gardner | 1 | 1 |
← Hart to Hart × Three's Company
Cast data from TVmaze, licensed CC BY-SA 4.0.