| Name | Functions | Event Dates | Events | Resources  | ||
|---|---|---|---|---|---|---|
| Robert Ingham | Actor | 1967 | 3 | |||
| Birgitta Isberg | Actor | 1967 | 1 | |||
| Saburo Izumino | Director | 1966 | 1 | |||
| Anaid Iplicjian | Actor | 1956 - 1966 | 2 | |||
| Janko Ibler | Translator | 1896 - 1897 | 3 | |||
| Eileen Itkowitz | Actor | 1965 | 1 | |||
| Ayumi Iwata | Actor | 1997 | 1 | |||
| Zoltán Imre | Dramaturg | 2005 | 2 | |||
| Naoyuki Iwata | Sound Designer | 2002 | 1 | |||
| Simone Inzko | Translator | 2002 | 2 | |||
| Rosanne Ifould | Actor | 2002 | 1 | |||
| Tomie Ishizuka | Actor | 2002 | 1 | |||
| Lepomir Ivković | Actor | 2002 | 2 | |||
| - Ives | Composer | 2002 | 1 | |||
| Julia Irmscher | Actor | 1989 | 1 | |||
| Amy Irving | Actor | 2002 | 1 | |||
| Konstantin Ivanov | Actor | 2002 - 2004 | 2 | |||
| Genji Ito | Composer, Sound Designer | 1997 | 2 | |||
| Lotta Ivert | Actor | 1997 | 6 | |||
| Giovanni Indelicato | Mask Maker | 1997 | 1 | |||
| Akira Ito | Director, Sound Designer | 1997 | 2 | |||
| Seiko Isono | Costume Designer | 1997 | 1 | |||
| Zofia de Ines | Costume Designer | 1997 | 1 | |||
| Giulia Innocenti | Actor | 2003 | 4 | |||
| Monika Isele | Actor | 2001 | 1 | |||
| Nina Ionescu | Actor | 2003 | 1 | |||
| Agis Ioannidis | Composer | 2003 | 1 | |||
| Helen Isaacson | Choreographer | 2003 | 1 | |||
| - Ishitta | Actor | 2003 | 1 | |||
| Tomáš Impseil | Actor | 2011 | 2 | |||
| Anna Ipat'eva | Costume Designer | 2003 - 2005 | 2 | |||
| Filippía I. Elísdóttir | Costume Designer | 2001 - 2011 | 4 | |||
| J.J. Ignacio | Actor | 2004 | 1 | |||
| Sarah Inqilqane | Actor | 2004 | 1 | |||
| Ola Isedal | Actor | 2004 | 1 | |||
| Andrea Irwin | Actor | 2004 | 2 | |||
| David Inglis | Actor | 2004 | 1 | |||
| Garbiñe Insausti | Actor | 2004 | 2 | |||
| Nick Insley | Lighting Designer | 2004 - 2023 | 2 | |||
| Endre Indrehus | Actor | 2004 | 4 | |||
| Irini Inglesi | Actor | 2004 - 2005 | 2 | |||
| Shaike Mohammad Ismail Hossain | Actor | 2004 | 1 | |||