| Iparraguirre, Iván | Iván Iparraguirre | Actor, Adaptation, Director | 2006 | 3 | 1 |
| Im, Kang Cheong | Kang Cheong Im | Actor | 2009 - 2012 | 3 | |
| Insel, Diana | Diana Insel | Dramaturg | 2009 - 2013 | 3 | |
| Irle, Eddie | Eddie Irle | Actor | 2016 | 3 | |
| Ivo, Barišič | Barišič Ivo | Actor | 2010 - 2012 | 3 | 1 |
| Innes, George | George Innes | Actor | 1964 - 1965 | 3 | |
| Inger, Johan | Johan Inger | Choreographer | 2017 - 2022 | 3 | |
| Ionescu, C. | C. Ionescu | Actor | 1894 - 1901 | 3 | |
| Ionescu, Lucian | Lucian Ionescu | Musical Director | 1955 - 1966 | 3 | |
| Ifrim, Nicolae | Nicolae Ifrim | Actor | 1955 - 1976 | 3 | |
| Ivo, L. | L. Ivo | Designer | 1956 - 1957 | 3 | |
| Iliev, Jana | Jana Iliev | Actor | 1998 - 2000 | 3 | |
| Ihalainen, Marjukka | Marjukka Ihalainen | Actor | 1998 | 3 | |
| Iivanainen, Hilkka-Liisa | Hilkka-Liisa Iivanainen | Director, Dramaturg, Sound Designer | 2012 | 3 | |
| Ionescu Micu, Antonia | Antonia Ionescu Micu | Actor | 2016 | 3 | |
| Ives, Harry | Harry Ives | Actor | 1964 - 1969 | 3 | |
| Icke, Robert | Robert Icke | Director, Playwright | 2018 - 2021 | 3 | |
| Izsó, Miklós | Miklós Izsó | Actor | 1922 - 1927 | 3 | |
| Izsáki, Margit | Margit Izsáki | Actor | 1922 - 1927 | 3 | |
| Ilardo, Scilla | Scilla Ilardo | Costume Designer | 2018 | 3 | |
| Irondelle, Séverine | Séverine Irondelle | Costume Designer | 2018 | 3 | |
| Imboden, Stephan | Stephan Imboden | Actor | 2018 | 3 | |
| Iannone, Valentina | Valentina Iannone | Actor | 2013 - 2014 | 3 | |
| Iswardhani, Arsita | Arsita Iswardhani | Actor | 2019 | 3 | |
| In-seong, Song | Song In-seong (송인성) | Actor | 2025 | 3 | |
| Iba, Shigeaki | Shigeaki Iba | Sound Designer | 2000 - 2007 | 2 | |
| Icke, Gisela | Gisela Icke | Actor | 1973 - 1980 | 2 | |
| Igawa, Kujaku | Kujaku Igawa | Actor | 1913 - 1914 | 2 | |
| Illers, Susanne | Susanne Illers | Actor | 1980 - 1983 | 2 | |
| Ito, Tomoko | Tomoko Ito | Actor | 1984 - 1997 | 2 | |
| Il'in, Ju | Ju Il'in | Actor | 1999 - 2000 | 2 | |
| Iversen, Oscar | Oscar Iversen | Actor | 1876 - 1899 | 2 | |
| Isert, Mr. | Mr. Isert | Actor | 1888 | 2 | |
| Isleiber, Mr. | Mr. Isleiber | Actor | 1888 | 2 | |
| Ising Jr., Arnold | Arnold Ising Jr. | Actor, Translator | 1889 | 2 | |
| Idali, Joseph | Joseph Idali | Actor | 1895 - 1898 | 2 | |
| Illing, Meta | Meta Illing | Actor | 1893 - 1899 | 2 | |
| Ingo-Brandt, Alex | Alex Ingo-Brandt | Actor | 1910 - 1911 | 2 | |
| Ihle, Peter | Peter Ihle | Actor | 1921 - 1927 | 2 | |
| Iblacker, Edmund | Edmund Iblacker | Actor | 1932 | 2 | |
| in der Au, Ottomar | Ottomar in der Au | Actor, Director | 1946 | 2 | |
| in der Au, Majo | Majo in der Au | Actor | 1946 | 2 | |
|
|
