List of military / I

Iachino, Angelo (1889–1976), Italian admiral in World War II, 1941/42 commander of the Italian fleet
Ibáñez del Campo, Carlos (1877–1960), Chilean general and politician
Ibrahim Pasha (1789–1848), Egyptian general
Ichiki Kiyonao (1892–1942), major general in the Imperial Japanese Army
Ichinohe Hyōe (1855-1931), General of the Imperial Japanese Army
Ignatjew, Nikolai Pawlowitsch (1832–1908), Russian general and statesman
Ihlenfeld, Andreas von (approx. 1590 – around 1656), officer in the Thirty Years' War
Iida Shōjirō (1888–1980), General of the Imperial Japanese Army
Iimura Jō (1888–1976), General of the Imperial Japanese Army
Ijichi Kōsuke (1854–1917), General of the Imperial Japanese Army
Ilow, Christian von (1585–1634), imperial field marshal in the Thirty Years' War and partisan of Wallenstein
Imeretinski, Alexander Konstantinowitsch Fürst (1837–1900), Russian general, Chief of the Army General Staff
Immelmann, Max (1890–1916), German flying ace in World War I, crashed
Ingenohl, Friedrich von (1857–1933), German admiral, chief of the German deep sea fleet
Innhausen and Knyphausen, Dodo Freiherr zu (1583–1636), important general in the Thirty Years War
Innhausen and Knyphausen, Wilhelm, Reichsfreiherr zu (1716–1800), general of the Hessian auxiliary troops in the American War of Independence
Iphicrates (415–353 BC), Attic general, mercenary general and army reformer
Ireton, Henry (1611–1651), General of the Armies of Parliament in the English Civil War, son-in-law of Cromwell
Irles, Joseph Canto d ' (1731–1797), Austrian field marshal lieutenant, defender of Mantua against Bonaparte 1796
Ironside, Edmund , 1st Baron (1880–1959), British Field Marshal, Chief of the Imperial General Staff in World War II, Governor of Gibraltar
Isolani, Johann Ludwig Hektor Graf von (1586–1640, also Isolano ), general in the Thirty Years' War
Istomin, Vladimir Ivanovich (1809–1855), Russian admiral, killed in the Crimean War
Iturbide, Agustín de (1783–1824), Mexican general and emperor
Ivens, Roberto (1850–1898), Portuguese explorer