| Name | Functions | Event Dates | Events | Resources | ||
|---|---|---|---|---|---|---|
| Lucian Ionescu | Musical Director | 1955 | 3 | |||
| Nicolae Ifrim | Actor | 1955 | 3 | |||
| L. Ivo | Designer | 1956 | 3 | |||
| Jana Iliev | Actor | 1998 | 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 | 3 | |||
| Phillip Isaksen | Lighting Designer | 2018 – 2020 | 3 | |||
| Miklós Izsó | Actor | 1922 – 1925 | 3 | |||
| Margit Izsáki | Actor | 1922 – 1924 | 3 | |||
| Shigeaki Iba | Sound Designer | 2000 – 2007 | 2 | |||
| Gisela Icke | Actor | 1973 | 2 | |||
| Kujaku Igawa | Actor | 1913 – 1914 | 2 | |||
| Susanne Illers | Actor | 1980 | 2 | |||
| Tomoko Ito | Actor | 1984 – 1997 | 2 | |||
| Ju Il'in | Actor | 1999 | 2 | |||
| Oscar Iversen | Actor | 1876 – 1900 | 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 | 2 | |||
| Peter Ihle | Actor | 1921 | 2 | |||
| Edmund Iblacker | Actor | 1932 | 2 | |||
| Ottomar in der Au | Actor, Director | 1946 | 2 | |||
| Majo in der Au | Actor | 1946 | 2 | |||
| V. O. Inskaja (V. O. Inskaja) | Actor | 1900 | 2 | |||
| Lára Indriðadóttir | Actor | 1903 | 2 | |||
| Pérez Indarte | Actor | 1906 | 2 | |||
| Eirik Ingebricson | Lighting Designer | 1995 | 2 | |||
| Tove Ingebrigtsen | Mask Maker | 1996 – 2004 | 2 | |||
| Marthe Isaksen | Actor | 2003 – 2004 | 2 | |||
| Jan-Emil Indergaard | Sound Designer | 2006 – 2008 | 2 | |||
| Lars Igesund | Musician | 2006 – 2008 | 2 | |||
| Eir Inderhaug | Actor | 2007 – 2008 | 2 | |||
| Terje Isungset | Musician | 2009 – 2010 | 2 | |||
| Solrun Toft Iversen | Dramaturg | 2011 – 2014 | 2 | |||
| Mihailo Isajlović | Director | 1921 | 2 | |||
| Jørn Me Iin | Lighting Designer | 2000 | 2 | |||
| Bernadette Iglich | Dancer | 1990 | 2 | |||