| Olivares, Erica | Erica Olivares | Actor | 1976 | 1 | |
| Otrélius, Dag | Dag Otrélius | Actor | 1976 | 4 | |
| Omnéus, Göran | Göran Omnéus | Actor | 1976 | 2 | |
| Olsen, Eyvind | Eyvind Olsen | Musician | 1976 | 1 | |
| O'Sullivan, Barney | Barney O'Sullivan | Actor | 1976 - 1980 | 2 | |
| Ogasawara, Yoshitomo | Yoshitomo Ogasawara | Actor | 1976 - 1990 | 4 | |
| Oikonomidou, Rania | Rania Oikonomidou | Actor | 1976 - 2004 | 7 | |
| Onstad, Kari | Kari Onstad (Kari Onstad) | Actor | 1976 - 2018 | 60 | 5 |
| Oglesby, Thomas | Thomas Oglesby | Actor | 1977 - 1980 | 2 | |
| Oliver, Stephen | Stephen Oliver | Composer | 1977 - 1983 | 9 | |
| Oschlag, Jakob | Jakob Oschlag | Adaptation, Director | 1977 - 2001 | 8 | |
| Oest, Johann Adam | Johann Adam Oest (Johann Adam Oest) | Actor | 1977 - 2004 | 4 | |
| Olsen, Ingunn | Ingunn Olsen | Actor | 1978 | 1 | |
| Olsen, Edgar Meyer | Edgar Meyer Olsen | Sound Designer | 1978 | 2 | |
| Ofsdal, Steinar | Steinar Ofsdal | Musician | 1978 | 38 | |
| Ohtsuka, Michiko | Michiko Ohtsuka | Actor | 1978 | 1 | |
| Obino, Kinji | Kinji Obino | Actor | 1978 | 1 | |
| Obino, Tetsushi | Tetsushi Obino | Actor | 1978 | 1 | |
| Ohtori, Yachiyo | Yachiyo Ohtori | Actor | 1978 | 1 | |
| Oostveen, Anne | Anne Oostveen | Actor | 1978 | 1 | |
| Ogilvie, Michael | Michael Ogilvie | Actor | 1978 - 1982 | 4 | |
| Ohkata, Hisako | Hisako Ohkata | Actor | 1978 - 1983 | 2 | |
| Ourth, Georges | Georges Ourth (Georges Ourth) | Actor, Director | 1978 - 1984 | 2 | |
| Ohnesorge, Helli | Helli Ohnesorge | Actor | 1978 - 1986 | 2 | |
| Ornbo, Robert | Robert Ornbo | Lighting Designer | 1978 - 1987 | 2 | |
| Owen, Marianne | Marianne Owen (Marianne Owen) | Actor | 1978 - 1996 | 4 | |
| Oszter, Sándor | Sándor Oszter | Actor | 1978 - 2007 | 2 | |
| Olesen, Kirsten | Kirsten Olesen | Actor | 1978 - 2011 | 12 | 1 |
| Ottersen, Anne Marie | Anne Marie Ottersen (Anne Marie Ottersen) | Actor | 1978 - 2014 | 7 | |
| Orr, Diane | Diane Orr (Diane Orr) | Actor | 1979 | 1 | |
| Owen, Brett | Brett Owen | Actor | 1979 | 1 | |
| O' Mahony, Tom | Tom O' Mahony | Actor | 1979 | 1 | |
| O´Neill, Noel | Noel O´Neill | Actor | 1979 | 1 | |
| Okking, Jens | Jens Okking | Actor | 1979 - 1984 | 4 | |
| Ohgitani, Kunio | Kunio Ohgitani (Kunio Ohgitani) | Director | 1980 | 1 | |
| Ogawa, Shinji | Shinji Ogawa | Actor | 1980 | 1 | |
| Oug, Linda | Linda Oug | Actor | 1980 | 1 | |
| O'Donoghue, Brian | Brian O'Donoghue | Lighting Designer | 1980 | 1 | |
| O'Brien, Paul | Paul O'Brien | Actor | 1980 | 1 | |
| Oman, Julia, Trevelyan | Julia Trevelyan Oman | Designer | 1980 | 1 | |
| Odegard, Julia | Julia Odegard | Actor | 1980 | 1 | |
| Olohan, John | John Olohan | Actor | 1980 | 16 | |
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