| Ito, Genji | Genji Ito | Composer, Sound Designer | 1997 | 2 | |
| Ivert, Lotta | Lotta Ivert | Actor | 1997 | 6 | |
| Indelicato, Giovanni | Giovanni Indelicato | Mask Maker | 1997 | 1 | |
| Ito, Akira | Akira Ito | Director, Sound Designer | 1997 | 2 | |
| Isono, Seiko | Seiko Isono | Costume Designer | 1997 | 1 | |
| Ines, Zofia de | Zofia de Ines | Costume Designer | 1997 | 1 | |
| Innocenti, Giulia | Giulia Innocenti | Actor | 2003 | 4 | |
| Isele, Monika | Monika Isele | Actor | 2001 | 1 | |
| Ionescu, Nina | Nina Ionescu | Actor | 2003 | 1 | |
| Ioannidis, Agis | Agis Ioannidis | Composer | 2003 | 1 | |
| Isaacson, Helen | Helen Isaacson | Choreographer | 2003 | 1 | |
| Ishitta, - | - Ishitta | Actor | 2003 | 1 | |
| Impseil, Tomáš | Tomáš Impseil | Actor | 2011 | 2 | |
| Ipat'eva, Anna | Anna Ipat'eva | Costume Designer | 2003 - 2005 | 2 | |
| I. Elísdóttir, Filippía | Filippía I. Elísdóttir | Costume Designer | 2001 - 2011 | 4 | |
| Ignacio, J.J. | J.J. Ignacio | Actor | 2004 | 1 | |
| Inqilqane, Sarah | Sarah Inqilqane | Actor | 2004 | 1 | |
| Isedal, Ola | Ola Isedal | Actor | 2004 | 1 | |
| Irwin, Andrea | Andrea Irwin | Actor | 2004 | 2 | |
| Inglis, David | David Inglis | Actor | 2004 | 1 | |
| Insausti, Garbiñe | Garbiñe Insausti | Actor | 2004 | 2 | |
| Insley, Nick | Nick Insley | Lighting Designer | 2004 - 2023 | 2 | |
| Indrehus, Endre | Endre Indrehus | Actor | 2004 | 4 | |
| Inglesi, Irini | Irini Inglesi | Actor | 2004 - 2005 | 2 | |
| Ismail Hossain, Shaike Mohammad | Shaike Mohammad Ismail Hossain | Actor | 2004 | 1 | |
| Inamdar, Beena | Beena Inamdar | Producer | 2005 | 1 | |
| Ionesi, Tatiana | Tatiana Ionesi | Actor | 2005 | 1 | |
| Iorga, Livia | Livia Iorga | Actor | 2005 | 2 | |
| Ignat, Diana | Diana Ignat | Actor, Dancer | 2005 | 3 | |
| Iacob, Gabriela | Gabriela Iacob | Actor, Dancer | 2005 | 3 | |
| Ioan, Raluca | Raluca Ioan | Composer | 2005 | 1 | |
| Irwin, Tom | Tom Irwin | Actor | 2001 | 1 | |
| Idrizi, Besfort | Besfort Idrizi | Assistant Director | 2013 - 2015 | 3 | |
| Ikiki, Quentin | Quentin Ikiki | Actor | 2005 | 1 | |
| Ilczuk, Anna | Anna Ilczuk | Actor | 2005 - 2006 | 3 | |
| Iacov, Adrian | Adrian Iacov | Actor, Assistant Director | 2010 | 8 | |
| Ichimura, Masachika | Masachika Ichimura | Actor | 2005 | 1 | |
| Iblová, Anna | Anna Iblová | Actor | 1941 - 1943 | 2 | |
| Indira | Indira - | Costume Designer | 2001 | 1 | |
| Imrichová, Veronika | Veronika Imrichová | Dramaturg | 2011 | 1 | |
| Iwańska, Małgorzata | Małgorzata Iwańska | Actor | 2007 | 3 | |
| Idziak, Bolesław | Bolesław Idziak | Actor | 1959 | 1 | |
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