| Janis Ian | born 1951 | 1 |
| Henrik Ibsen | 1828–1906 | 44 |
| Sigurd Ibsen | 1859–1930 | 1 |
| Ignatius, of Loyola, Saint | 1491–1556 | 1 |
| George Iles | 1852–1942 | 1 |
| Dragutin J. Ilić | 1858–1926 | 1 |
| Luigi Illica | 1857–1919 | 1 |
| Imbert de Saint-Amand | 1834–1900 | 4 |
| Hugues Imbert | 1842–1905 | 1 |
| Inayat Khan | 1882–1927 | 1 |
| Mrs. Inchbald | 1753–1821 | 3 |
| Fay Inchfawn | 1880–1978 | 1 |
| Indriði Einarsson | 1851–1939 | 1 |
| Dean Ing | 1931–2020 | 1 |
| William Ralph Inge | 1860–1954 | 3 |
| Jean Ingelow | 1820–1897 | 4 |
| Bernhard Severin Ingemann | 1789–1862 | — |
| Robert Green Ingersoll | 1833–1899 | 3 |
| Ingimundur Sveinsson | 1873–1926 | 1 |
| C. M. (Clement Mansfield) Ingleby | 1823–1886 | 1 |
| Antoinette Inglis | born 1880 | 1 |
| James Inglis | 1845–1908 | 1 |
| A. E. (Alfred Emil) Ingman | 1860–1917 | 1 |
| Prentiss Ingraham | 1843–1904 | 1 |
| Eleanor M. (Eleanor Marie) Ingram | 1886–1921 | 1 |
| J. (James) Ingram | 1774–1850 | 1 |
| John Henry Ingram | 1842–1916 | 1 |
| William H. Ingram | born 1877 | 1 |
| Into Konrad Inha | 1865–1930 | 1 |
| Henry Inman | 1837–1899 | 2 |
| A. Taylor (Alexander Taylor) Innes | 1833–1912 | 1 |
| Arthur D. (Arthur Donald) Innes | 1863–1938 | 1 |
| Cosmo Innes | 1798–1874 | 1 |
| Konstantin Aleksandrovich Inostrantzev | 1876–1941 | 1 |
| Carolina Invernizio | 1851–1916 | 1 |
| Alleyne Ireland | 1871–1951 | 1 |
| Mary E. (Mary Eliza) Ireland | 1834–1927 | 1 |
| Tomás de Iriarte | 1750–1791 | 1 |
| Alexander Irvine | 1863–1941 | 1 |
| H. B. (Henry Brodribb) Irving | 1870–1919 | 1 |
| Irving, Henry, Sir | 1838–1905 | 1 |
| Washington Irving | 1783–1859 | 21 |
| Richard B. (Richard Biddle) Irwin | 1839–1892 | 1 |
| Wallace Irwin | 1876–1959 | 3 |
| Will Irwin | 1873–1948 | 3 |
| Frederic Stewart Isham | 1866–1922 | 3 |
| Antonia Isola | born 1876 | 1 |
| Jozef Israëls | 1824–1911 | 1 |
| Jean Marc Gaspard Itard | 1775–1838 | 1 |
| Santeri Ivalo | 1866–1937 | 1 |
| Sigismond de Ivanowski | 1875–1944 | 5 |
| W. G. (Walter George) Ivens | born 1871 | 1 |
| Charles Ives | 1874–1954 | 1 |
| George Burnham Ives | 1856–1930 | 3 |
| Sarah Noble Ives | 1864–1944 | 1 |
| John W. (John William) Ivimey | born 1868 | 1 |
| P. V. E. Ivory | 1883–1960 | 3 |
| T. (Toyokichi) Iyenaga | 1862–1936 | 1 |