| Ionescu, Victor | Victor Ionescu | Actor | 1967 | 1 | |
| Ionesi, Tatiana | Tatiana Ionesi | Actor | 2005 | 1 | |
| Ionidou, Korinna | Korinna Ionidou (Korinna Ionidou) | Actor | 1903 | 4 | |
| Ioniță, Vali | Vali Ioniță | Director | 2005 | 1 | |
| Ions, Jason | Jason Ions (Jason Ions) | Designer | 2002 | 1 | |
| Iordan, Ilie | Ilie Iordan | Actor | 2011 | 1 | |
| Iordănescu, Ştefan | Ştefan Iordănescu | Actor, Director | 1970 - 1998 | 6 | |
| Iordanidis, Giannis | Giannis Iordanidis | Actor, Director, Dramaturg, Translator | 1965 - 2008 | 16 | |
| Iorga, Livia | Livia Iorga | Actor | 2005 | 2 | |
| Iorga, Silvius | Silvius Iorga | Actor | 2009 | 2 | |
| Iosifescu, Cerasela | Cerasela Iosifescu (Cerasela Iosifescu) | Actor | 1992 | 1 | |
| Iparraguirre, Iván | Iván Iparraguirre | Actor, Adaptation, Director | 2006 | 3 | 1 |
| Ipat'eva, Anna | Anna Ipat'eva | Costume Designer | 2003 - 2005 | 2 | |
| Iplicjian, Anaid | Anaid Iplicjian | Actor | 1956 - 1966 | 2 | |
| Ipša, Biserka | Biserka Ipša | Actor | 1983 | 1 | |
| Ipsen, Bodil | Bodil Ipsen (Bodil Ipsen) | Actor, Director | 1924 - 2004 | 20 | 1 |
| Ipsen, Henrik | Henrik Ipsen | Actor | 1997 | 1 | |
| Iqbal, Mariam | Mariam Iqbal | Actor | 2010 | 1 | |
| Irani, Naser | Naser Irani | Translator | 2020 | 1 | |
| Iranzo, Antonio | Antonio Iranzo | Actor | 1968 - 1982 | 4 | 1 |
| Iranzo, Eli | Eli Iranzo | Actor | 2014 | 1 | |
| Irbil, Clement | Clement Irbil | Lighting Designer | 2014 - 2023 | 4 | |
| Ireland, Greg | Greg Ireland | Composer, Musician | 2018 | 2 | |
| Irene, Nikoleta | Nikoleta Irene | Actor | 2018 | 1 | |
| Ireys, John | John Ireys | Actor, Dancer | 1940 | 6 | |
| Irfan | Irfan - | Actor | 1991 | 1 | |
| Irgen, Lilly | Lilly Irgen (Lilly Irgen) | Actor | 1911 | 1 | |
| Irgens-Hansen, Mari | Mari Irgens-Hansen (Mari Irgens-Hansen) | Actor | 1891 - 1921 | 11 | 1 |
| Irgens, Nadine Lehmann | Nadine Lehmann Irgens (Nadine Lehmann Irgens) | Actor | 2012 | 1 | |
| Iribarren, Federico | Federico Iribarren | Actor | 1943 | 1 | |
| Iribarren, Mateo | Mateo Iribarren (Mateo Iribarren) | Actor | 2006 | 1 | |
| Irigoyen, Magdalena | Magdalena Irigoyen | Dancer | 1992 | 1 | |
| Irimia, Cristian | Cristian Irimia | Actor | 1977 | 4 | |
| Irimieş, Leonida | Leonida Irimieş | Actor | 1937 | 1 | |
| Irion, Kathrin | Kathrin Irion | Actor | 1996 | 1 | |
| Irion, Klaus | Klaus Irion | Actor | 1999 | 1 | |
| Irish, Annie | Annie Irish (Annie Irish) | Actor | 1889 | 1 | 1 |
| Irish, Neil | Neil Irish (Neil Irish) | Designer | 1999 | 30 | |
| Irjala, Pentti | Pentti Irjala | Actor | 1953 | 1 | |
| Irle, Eddie | Eddie Irle | Actor | 2016 | 3 | |
| Irma | Irma - | Actor | 1909 | 1 | |
| Irmen, Garda | Garda Irmen (Garda Irmen) | Actor | 1898 - 1900 | 3 | |
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