Wikisource:Authors-I

Ib

 * Ibáñez, Vicente Blasco
 * Ibbetson, Denzil
 * ibn al-Walid, Ibrahim
 * Ibn Arabi, Abū (1165–1240)
 * ibn Tibbon, Samuel
 * Ibrahim I
 * Ibsen, Henrik Johan (1828–1906)
 * Ibárruri, Dolores (1895–1989)

Id

 * Ide, George Barton (1804–1872)
 * Ideler, Christian Ludwig (1766–1846)

Ie

 * Ieyasu, Tokugawa (1543–1616)

Ig

 * Ignatius of Antioch (35–107)
 * Saint Ignatius of Loyola (1491–1556)
 * Pseudo-Ignatius of Antioch

Ih

 * Ihne, Wilhelm (1821–1902)

Il

 * Ilbert, Sir Courtenay Peregrine (1841–1924)
 * Iles, George (1852–1942)
 * Ilyin, Modest Mikhailovich (1889–1967)

Im

 * Image, Selwyn (1849–1930)
 * Im Bang (1640–1724)
 * Imboden, John Daniel (1823–1895)
 * Imlay, Fanny (1794–1816)

In

 * d'Incarville, Pierre Nicolas (1706–1757)
 * Inchbald, Elizabeth (1753–1821)
 * d'Indy, Vincent (1851–1931)
 * Infante, Blas (1885–1936)
 * Ingalls, Joshua King (1816–1879)
 * Ingersoll, Col. Robert G. (1833–1899)
 * Ingalls Wilder, Laura (1867–1957)
 * Inge, William Ralph (1860–1954)
 * Ingemann, Bernhard Severin (1789–1862)
 * Ingersoll, Charles Jared (1782–1862)
 * Ingersoll, Ernest (1852–1946)
 * Ingersoll, Helen
 * Ingersoll, Robert Green (1833–1899)
 * Ingleby, Clement Mansfield (1823–1886)
 * Ingleby, Holcombe (1854–1926)
 * Inglis, James (1845–1908)
 * Ingram, James (1800's)
 * Ingram, John Henry (1842–1916)
 * Ingram, John Kells (1823–1907)
 * Ingram, Thomas Allan (1870–1922)
 * Innes, Arthur Douglas (1863–1938)
 * Innes, Cosmo (1798–1874)
 * Innes, Thomas (1662–1744)
 * Innocent IV, Pope (1195–1254)
 * Innocent VIII, Pope (1432–1492)
 * Inouye, Daniel (1924–present)
 * Inpumon'in no Tayū (1130–1200)
 * Intef VII (16th century BCE)

Io

 * Ioan Cuza, Alexandru (1820–1873)
 * Ionescu, Take (1858–1922)
 * Nicolae Iorga (1871–1940)

Iq

 * Iqbal, Muhammad (1877–1938)

Ir

 * Iredell, James (1751–1799)
 * Iredell, James (1788-1853)
 * Ireland, Alleyne (1871–1951)
 * Ireland, Alexander (1810–1894)
 * Ireland, John (1838–1918)
 * Ireland, Samuel (1744–1800)
 * Ireland, William Henry (1775–1835)
 * Irenaeus (130–202)
 * de Iriarte y Oropesa, Tomás (1750–1791)
 * Irons, William Josiah (1812–1883)
 * Irvine, Jessie Seymour (1836–1883)
 * Irvine, William (1885–1962)
 * Irvine, William Fergusson (1869–1962)
 * Irving, Edward (1792–1834)
 * Irving, Washington (1783–1859)
 * Irwin, Florence (b. 1869)
 * Irwin, Frederick Chidley (1788–1860)
 * Irwin, Wallace (1875–1959)

Is

 * Isaac of Nineveh (640–700)
 * Isaac, Jules (1877–1963)
 * Isaacs, Edith J. R. (1876–1956)
 * Isaacs, Lewis M. (1877–1944)
 * Isaeus (c. 420 BCE–c. 350 BCE)
 * Ise (875–936)
 * Ise no Taifu (989–1060)
 * Isḥāq ibn Ḥunayn, Abū Yaʿqūb (c. 830–c. 910)
 * ibn Isḥāq al-ʻIbādī, Ḥunayn (809–873)
 * Isidorus of Alexandria (c. 450–c. 520)
 * Isocrates (436 BCE–338 BCE)
 * Israëls, Jozef (1824–1911)
 * Issachar (? BCE)

Iv

 * Ives, Alice Emma (1876–1930)
 * Ives, Charles (1874–1954)
 * Ivins Sr., William Mills (1851–1915)

Iw

 * Iwaya Sazanami (1870–1933)

Iz

 * Izumi Shikibu (c. 976–1033)