| Name | Functions | Event Dates | Events | Resources  | ||
|---|---|---|---|---|---|---|
| Donna Isaac | Actor | 1984 | 1 | |||
| Andrew Inglis | Actor | 1989 | 1 | |||
| Michel Izquieta | Actor | 2006 | 1 | |||
| Stefan Iżyłowski | Actor | 1978 | 1 | |||
| Krystyna Iłłakowicz | Actor | 1954 | 1 | |||
| Else Israel | Actor | 1896 - 1898 | 3 | |||
| Russi Ivanov | Lighting Designer | 2001 | 1 | |||
| James F. Ingalls | Lighting Designer | 1982 - 2013 | 5 | |||
| Brenda May Ito | Choreographer | 2004 | 1 | |||
| Schiff I | Actor | 1894 | 1 | |||
| Schiff II | Actor | 1894 | 1 | |||
| Mariam Shaibu Itimu | Actor | 2006 | 22 | |||
| Neil Irish | Designer | 1999 | 30 | |||
| László Ildikó | Costume Designer | 2008 - 2010 | 4 | |||
| Sukanya Iyer | Actor | 2010 | 1 | |||
| Julius Irwin | Actor | 1893 - 1901 | 10 | |||
| Inge Iwanowitsch | Actor | 1972 | 1 | |||
| Benno Ifland | Actor | 2006 - 2014 | 5 | |||
| Jennie Israel | Actor | 2011 | 1 | |||
| Marie Immisch | Actor | 1887 - 1909 | 9 | |||
| Þorvaldur Ingólfsson | Actor | 1944 | 1 | |||
| Andreas Ingenhaag | Director | 2010 | 6 | |||
| Kholood Issa | Actor | 2009 - 2010 | 6 | |||
| Gregory Itzin | Actor | 1976 - 2011 | 3 | |||
| Morgan Isackes | Actor | 1988 | 1 | |||
| Justine Iversen | Actor | 1861 | 1 | |||
| Magda Irschick | Actor | 1876 - 1877 | 3 | |||
| Oscar Iversen | Actor | 1876 - 1899 | 2 | |||
| Frk. Ihle | Actor | 1878 | 1 | |||
| Fanny Ingberg | Actor | 1882 | 1 | |||
| M. W. Ingman | Actor | 1883 | 1 | |||
| Mr. Isert | Actor | 1888 | 2 | |||
| Mr. Isleiber | Actor | 1888 | 2 | |||
| Mari Irgens-Hansen | Actor | 1894 - 1921 | 7 | |||
| Annie Irish | Actor | 1889 | 1 | |||
| Arnold Ising Jr. | Actor, Translator | 1889 | 2 | |||
| Frances Ivor | Actor | 1892 - 1895 | 6 | |||
| Bianca Iggius | Actor | 1894 - 1896 | 6 | |||
| Laurence Irving | Actor, Costume Designer, Designer | 1894 - 1955 | 8 | |||
| Anna Iversen | Actor | 1896 | 3 | |||
| William Iversen | Actor | 1896 | 3 | |||
| - Isaac | Actor | 1896 | 1 | |||