| Name | Functions | Event Dates  | Events | Resources | ||
|---|---|---|---|---|---|---|
| Risto Taulo | Actor | 1979 | 1 | |||
| Anna-Liisa Tiensuu | Actor | 1979 | 1 | |||
| Erkki Teittinen | Actor | 1979 | 1 | |||
| Antoni Tośta | Designer | 1979 | 1 | |||
| Ilga Tomase | Actor | 1979 | 1 | |||
| Sally Tudor | Actor | 1979 | 1 | |||
| Nicholas Tudor | Actor | 1979 | 1 | |||
| Michael Tarant | Actor, Director | 1978 - 2012 | 3 | 1 | ||
| Marie Louise Tank | Actor | 1978 - 1986 | 6 | 1 | ||
| Bianca Toccafondi | Actor | 1978 - 1980 | 3 | |||
| Marta Taddei | Actor | 1978 - 1980 | 2 | |||
| Kazuko Tsuji | Actor | 1978 | 2 | |||
| Eduard Töth | Actor | 1978 | 1 | |||
| Veli Tuomas-Kettunen | Actor | 1978 | 1 | |||
| Anders Thuresson | Translator | 1978 | 1 | 1 | ||
| Eugene Troobnick | Actor | 1978 | 1 | 1 | ||
| Sylva Turbová | Actor | 1978 | 1 | |||
| Jaroslava Tvrzníková | Actor | 1978 | 1 | |||
| Ştefan Tivodaru | Actor | 1978 | 1 | |||
| Ray Tillotson | Actor | 1978 | 1 | |||
| Külliki Tool | Actor | 1978 | 1 | |||
| Dennis Tynsley | Actor | 1978 | 1 | |||
| Yusuke Takida | Actor | 1978 | 1 | |||
| Leo Taylor | Actor | 1978 | 3 | |||
| Kaori Taniguchi | Actor | 1978 | 1 | |||
| Jane Tschetter | Costume Designer | 1978 | 1 | |||
| Douglas Taylor | Lighting Designer | 1978 | 1 | |||
| Juliet Taylor | Actor | 1978 | 1 | |||
| Alfred Tewes | Actor | 1978 | 1 | |||
| Sabina Trooger | Actor | 1978 | 1 | |||
| Brian Toney | Actor | 1978 | 1 | |||
| Lisbeht Tammeleht | Actor | 1978 | 1 | |||
| Arla Theys | Actor | 1978 | 1 | |||
| Feđa Tapavički | Actor | 1978 | 1 | |||
| Kenneth W. Tanner | Actor | 1978 | 1 | |||
| Mel Traxel | Photographer | 1978 | 1 | |||
| Pepa Terrón | Actor | 1978 | 1 | |||
| Ersen Tunççekiç | Lighting Designer | 1977 - 2007 | 2 | |||
| Lothar Trautmann | Director | 1977 - 1994 | 2 | |||
| Maija-Liisa Thomenius | Costume Designer | 1977 - 1986 | 3 | |||
| Laurence Tuerk | Lighting Designer, Sound Designer | 1977 - 1984 | 3 | |||
| Christos Tsagkas | Actor, Composer, Director, Dramaturg | 1977 - 1984 | 24 | |||