| Name | Functions | Event Dates  | Events | Resources | ||
|---|---|---|---|---|---|---|
| Ko ina | ||||||
| Iver Innset | ||||||
| Lina Ikse | 4 | |||||
| Thodoros Ignatiadis | ||||||
| Tove Ilsaas | 1 | |||||
| Henrik Ibsen | Actor, Author, Director, Musical Director, Musician, Playwright, Producer, Translator | 1850 - 2023 | 24807 | 218 | ||
| Andreas Isachsen | Actor | 1853 - 1891 | 55 | 2 | ||
| Janny Isachsen | Actor | 1857 | 1 | 1 | ||
| Justine Iversen | Actor | 1861 | 1 | |||
| Magda Irschick | Actor | 1876 - 1877 | 3 | |||
| Oscar Iversen | Actor | 1876 - 1899 | 2 | |||
| Frk. Ihle | Actor | 1878 | 1 | |||
| Frl. Isoard | Actor | 1879 | 1 | |||
| Fanny Ingberg | Actor | 1882 | 1 | |||
| Belle Inman | Actor | 1883 | 1 | |||
| M. W. Ingman | Actor | 1883 | 1 | |||
| Marie Immisch | Actor | 1887 - 1909 | 9 | |||
| Mr. Isert | Actor | 1888 | 2 | |||
| Mr. Isleiber | Actor | 1888 | 2 | |||
| Annie Irish | Actor | 1889 | 1 | |||
| Arnold Ising Jr. | Actor, Translator | 1889 | 2 | |||
| - Ille | Actor | 1889 | 1 | |||
| Jenő Ivánfy | Actor | 1890 - 1891 | 3 | |||
| Michael Isailovits | Actor | 1890 - 1920 | 4 | |||
| Frances Ivor | Actor | 1892 - 1895 | 6 | |||
| Meta Illing | Actor | 1893 - 1899 | 2 | |||
| Julius Irwin | Actor | 1893 - 1901 | 10 | |||
| Sigurd Ibsen | Translator | 1893 - 2011 | 39 | 1 | ||
| Schiff I | Actor | 1894 | 1 | |||
| Schiff II | Actor | 1894 | 1 | |||
| Bianca Iggius | Actor | 1894 - 1896 | 6 | |||
| C. Ionescu | Actor | 1894 - 1901 | 3 | |||
| Mari Irgens-Hansen | Actor | 1894 - 1921 | 7 | |||
| Laurence Irving | Actor, Costume Designer, Designer | 1894 - 1955 | 8 | |||
| Joseph Idali | Actor | 1895 - 1898 | 2 | |||
| Anna Iversen | Actor | 1896 | 3 | |||
| William Iversen | Actor | 1896 | 3 | |||
| - Isaac | Actor | 1896 | 1 | |||
| Janko Ibler | Translator | 1896 - 1897 | 2 | |||
| Else Israel | Actor | 1896 - 1898 | 3 | |||
| Garda Irmen | Actor | 1898 - 1900 | 3 | |||
| Matej Ikonomov | Actor, Director | 1898 - 1915 | 8 | |||