| Ingham, Sheila | Sheila Ingham | Designer | 2001 | 1 | |
| Iliev, Bojko | Bojko Iliev | Director | 2001 | 1 | |
| Ivanovič, Marko | Marko Ivanovič | Composer | 2004 - 2012 | 2 | |
| Ibrahim, George | George Ibrahim | Adaptation, Director | 2008 | 12 | |
| István, Szőke | Szőke István | Choreographer | 2008 | 2 | |
| Isonuma, Yoko | Yoko Isonuma | Designer | 2008 | 1 | |
| Itoh, Sachiko | Sachiko Itoh | Costume Designer | 2008 | 1 | |
| Izetbegović, Maja | Maja Izetbegović | Actor | 2009 | 4 | |
| Iftimie, Nicu | Nicu Iftimie | Composer | 2009 - 2015 | 3 | |
| Ionescu, Ștefan | Ștefan Ionescu | Actor | 2009 - 2015 | 3 | |
| Illig, Nancy | Nancy Illig | Actor | 1954 - 1986 | 3 | |
| Innes, Laura | Laura Innes | Actor | 1984 | 1 | |
| Imberg, Angel | Angel Imberg | Actor | 2012 | 1 | |
| Inman, Eric | Eric Inman | Director | 2012 | 1 | |
| Isailovits, Michael | Michael Isailovits | Actor | 1890 - 1920 | 4 | |
| Ingram, Mark | Mark Ingram | Actor | 2013 | 1 | |
| Ingimarsdóttir, Auður | Auður Ingimarsdóttir | Actor | 1978 | 1 | |
| Inderfurth, Daniel | Daniel Inderfurth | Actor | 1985 | 1 | |
| Ilko, Donald W. | Donald W. Ilko | Director | 1986 | 1 | |
| Ištvan, Rostislav | Rostislav Ištvan | Actor | 1986 | 1 | |
| Ištvan, Miloslav | Miloslav Ištvan | Actor | 1986 | 1 | |
| Ištvan, Miloš | Miloš Ištvan | Composer | 1986 | 1 | |
| Ihle, Emma, Lola | Emma Lola Ihle | Actor | 2014 | 1 | |
| Inao, Yoshifumi | Yoshifumi Inao | Dancer | 2014 - 2019 | 8 | |
| Ikävalko, Matias | Matias Ikävalko | Actor | 1984 | 1 | |
| Ilyukhina, Svetlana | Svetlana Ilyukhina (Светлана Илюхина) | Actor | 2011 | 1 | |
| Ioannou, Odetti | Odetti Ioannou | Actor | 1991 - 2001 | 3 | |
| Irwin, Philip | Philip Irwin | Actor | 1990 | 1 | |
| Ignácz, György | György Ignácz | Actor | 1991 | 1 | |
| Izsóf, Vilmos | Vilmos Izsóf | Actor | 1991 | 1 | |
| Ivánka, Csaba | Csaba Ivánka | Actor | 1991 | 1 | |
| Inoue, Norihiro | Norihiro Inoue | Actor | 1990 - 1997 | 2 | |
| Isajeva, Alla | Alla Isajeva | Actor | 1956 | 1 | |
| Infante, Diogo | Diogo Infante | Actor | 1992 | 1 | |
| Isensee, Helga | Helga Isensee | Actor | 1992 | 1 | |
| Iwashita, Hiroshi | Hiroshi Iwashita | Actor | 1991 | 1 | |
| Ingram, Robin | Robin Ingram | Actor | 1992 | 1 | |
| Iversen, Trine | Trine Iversen | Actor, Lighting Designer | 1988 | 2 | |
| Ianculescu, Dinu | Dinu Ianculescu | Actor | 1989 - 1992 | 2 | |
| Ibáñez, José González | José González Ibáñez | Actor | 1982 | 2 | |
| Inger, Carl | Carl Inger | Dancer | 1992 | 1 | |
| Irigoyen, Magdalena | Magdalena Irigoyen | Dancer | 1992 | 1 | |
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