| Name | Functions | Event Dates  | Events | Resources | ||
|---|---|---|---|---|---|---|
| Stanisław Igar | Actor, Director | 1957 - 1975 | 2 | |||
| Chie Iwasaki | Actor | 1958 | 1 | |||
| Grady Ivy | Actor | 1958 | 1 | |||
| Daniel Ivernel | Actor | 1958 | 1 | 1 | ||
| Naoji Iwata | Director | 1958 | 1 | |||
| Anne Iddon | Actor | 1958 - 1959 | 2 | |||
| Bolesław Idziak | Actor | 1959 | 1 | |||
| Marieta Ionescu Mihail | Choreographer | 1959 | 1 | |||
| Manfred Inger | Actor | 1960 - 1964 | 3 | |||
| Tor Isedal | Actor | 1961 | 1 | 1 | ||
| Philip Ingram | Actor | 1961 | 2 | |||
| Iza Itkin | Director, Producer | 1961 | 2 | |||
| Loula Ioannidou | Actor | 1961 - 1997 | 9 | |||
| Ion Igorov | Actor | 1963 | 2 | |||
| Doina Ionescu | Actor | 1963 | 1 | |||
| Constantin Irod | Actor | 1963 | 1 | |||
| Cicerone Ionescu | Actor | 1963 | 1 | |||
| Tancred Ibsen | Director | 1963 | 1 | |||
| Georg Immelmann | Director | 1963 - 1977 | 3 | |||
| Richard Ingham | Actor | 1964 | 1 | |||
| Rob Inglis | Actor | 1964 | 1 | |||
| Monika Imhof | Actor | 1964 | 1 | |||
| Hiroshi Iwaki | Lighting Designer | 1964 | 1 | |||
| Aro Ito | Translator | 1964 | 1 | |||
| V. Ivanov | Director | 1964 | 1 | |||
| George Innes | Actor | 1964 - 1965 | 3 | |||
| Harry Ives | Actor | 1964 - 1969 | 3 | |||
| Eileen Itkowitz | Actor | 1965 | 1 | |||
| Ryo Ishihara | Actor | 1965 | 1 | |||
| Giannis Iordanidis | Actor, Director, Dramaturg, Translator | 1965 - 2008 | 16 | |||
| Saburo Izumino | Director | 1966 | 1 | |||
| Lucian Iancu | Actor | 1966 | 1 | |||
| Yasuhiro Ishii | Designer | 1967 | 1 | |||
| Paul Ingvoldstad | Actor | 1967 | 1 | |||
| Robert Ingham | Actor | 1967 | 3 | |||
| Birgitta Isberg | Actor | 1967 | 1 | |||
| Victor Ionescu | Actor | 1967 | 1 | |||
| Rauni Ikäheimo | Actor | 1967 - 1981 | 4 | |||
| Etsuko Ichihara | Actor | 1968 | 1 | |||
| Wolfgang Immenhausen | Actor | 1968 | 1 | |||
| Takao Ito | Actor | 1968 | 1 | |||
| Kazuko Imai | Actor | 1968 | 1 | |||