Actors in both Hart to Hart and Magnum, P.I.
104 actors have appeared in both Hart to Hart and Magnum, P.I., across 272 episodes. The most-credited is Kathleen Lloyd, Peggy Mullen in Hart to Hart and Assistant D.A. Carol Baldwin, Bridget Archer in Magnum, P.I..
| Actor | In Hart to Hart | In Magnum, P.I. | Eps | Eps |
|---|---|---|---|---|
| Kathleen Lloyd | Peggy Mullen | Assistant D.A. Carol Baldwin, Bridget Archer | 1 | 21 |
| Soon-Tek Oh | Lang Chen Cheng | General Nguyen Hue, Dr. Bill Su / Dr. Ling, Sato | 1 | 5 |
| John Hillerman | Victor Sutter | Father Paddy McGuinness, Don Luis Mongueo, Elmo Ziller | 1 | 4 |
| Lyman Ward | Lt. Draper | Frank Foley | 4 | 1 |
| Shelley Smith | Marina Belson, Susy Jensen | Melissa Wainwright, Peggy Armbruster | 2 | 2 |
| Christine Belford | Niki Stephanos, Victoria Dickenson | Adelaide Malone | 2 | 1 |
| Denny Miller | Trammel | FBI Agent Longdon, Ox | 1 | 2 |
| Elaine Joyce | Marilyn, Roberta "Bob" Hayword | Marina Pepesco | 2 | 1 |
| Gregory Sierra | Eduardo, Howard Castle | Miguel Torres | 2 | 1 |
| Henry Darrow | Inspector Correa, Rodriguez | Will Kenikowa | 2 | 1 |
| Paxton Whitehead | Gordon Chumley, Patrick Burke | William Troubshaw | 2 | 1 |
| Richard Johnson | Alex Constantine | Brigadier General Alistair Ffolkes | 1 | 2 |
| Lee De Broux | Conway, Harold Reese | Duffy, Gallagher, Rodney Radcliff | 2 | 3 |
| Anthony Newley | Tony Vacarro | Peter Riddley-Smythe | 1 | 1 |
| Beverly Garland | Real Grandma | Florence Russell | 1 | 1 |
| Carole Cook | Christine | Sarah Tate | 1 | 1 |
| Cesar Romero | Dr. Villac | Doc Villoroch | 1 | 1 |
| Cesare Danova | Noel Teppman | President Manuel Ebenez | 1 | 1 |
| Charles Lucia | Ronnie Cass | Coast Guard Lieutenant | 1 | 1 |
| Cynthia Sikes | Roseanne | Lauren Henderson | 1 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.