| Name | Functions | Event Dates | Events  | Resources | ||
|---|---|---|---|---|---|---|
| George Innes | Actor | 1964 - 1965 | 3 | |||
| C. Ionescu | Actor | 1894 - 1901 | 3 | |||
| Lucian Ionescu | Musical Director | 1955 - 1966 | 3 | |||
| Nicolae Ifrim | Actor | 1955 - 1976 | 3 | |||
| L. Ivo | Designer | 1956 - 1957 | 3 | |||
| Jana Iliev | Actor | 1998 - 2000 | 3 | |||
| Marjukka Ihalainen | Actor | 1998 | 3 | |||
| Hilkka-Liisa Iivanainen | Director, Dramaturg, Sound Designer | 2012 | 3 | |||
| Antonia Ionescu Micu | Actor | 2016 | 3 | |||
| Harry Ives | Actor | 1964 - 1969 | 3 | |||
| Robert Icke | Director, Playwright | 2018 - 2021 | 3 | |||
| Miklós Izsó | Actor | 1922 - 1927 | 3 | |||
| Margit Izsáki | Actor | 1922 - 1927 | 3 | |||
| Scilla Ilardo | Costume Designer | 2018 | 3 | |||
| Séverine Irondelle | Costume Designer | 2018 | 3 | |||
| Stephan Imboden | Actor | 2018 | 3 | |||
| Shigeaki Iba | Sound Designer | 2000 - 2007 | 2 | |||
| Gisela Icke | Actor | 1973 - 1980 | 2 | |||
| Kujaku Igawa | Actor | 1913 - 1914 | 2 | |||
| Susanne Illers | Actor | 1980 - 1983 | 2 | |||
| Tomoko Ito | Actor | 1984 - 1997 | 2 | |||
| Ju Il'in | Actor | 1999 - 2000 | 2 | |||
| Oscar Iversen | Actor | 1876 - 1899 | 2 | |||
| Mr. Isert | Actor | 1888 | 2 | |||
| Mr. Isleiber | Actor | 1888 | 2 | |||
| Arnold Ising Jr. | Actor, Translator | 1889 | 2 | |||
| Joseph Idali | Actor | 1895 - 1898 | 2 | |||
| Meta Illing | Actor | 1893 - 1899 | 2 | |||
| Alex Ingo-Brandt | Actor | 1910 - 1911 | 2 | |||
| Peter Ihle | Actor | 1921 - 1927 | 2 | |||
| Edmund Iblacker | Actor | 1932 | 2 | |||
| Ottomar in der Au | Actor, Director | 1946 | 2 | |||
| Majo in der Au | Actor | 1946 | 2 | |||
| V. O. Inskaja | Actor | 1900 - 1903 | 2 | |||
| Lára Indriðadóttir | Actor | 1903 - 1904 | 2 | |||
| Pérez Indarte | Actor | 1906 - 1907 | 2 | |||
| Eirik Ingebricson | Lighting Designer | 1995 - 1996 | 2 | |||
| Tove Ingebrigtsen | Mask Maker | 1996 - 2004 | 2 | |||
| Marthe Isaksen | Actor | 2003 - 2004 | 2 | |||
| Jan-Emil Indergaard | Sound Designer | 2006 - 2007 | 2 | 1 | ||
| Lars Igesund | Musician | 2006 - 2008 | 2 | |||
| Eir Inderhaug | Actor | 2007 - 2008 | 2 | |||