| Name, Place, or Title |
Born |
Died |
Noted |
| Idaho, State of (43rd. State) "The Gem State" | 1890/27 | - | 09, 27 |
| Idaho, Territory of | 1863/9 | 1890/27 | 09, 39 |
| Idyl of Red Gulch, The (Short Story) | - | - | 18 |
| Ike, Cliff "Ukelele Ike" (Movie Actor, Sidekick) | | | 29 |
| In Old Oklahoma (M) 1943 [aka: War of the Wildcats] | - | - | 21 |
| In Old Santa Fe (Movie) 1934 | - | - | 34, 40 |
| In the Days of Buffalo Bill (1922) | | | 01 |
| Independence | | | 41 |
| Independence, MO | | | 18 |
| Indian Agent) | | | 39 |
| Indian Charlie (Cruz, Judah Florentino) [T, Cowboy] | - | 12 | 11, 12 |
| Indian Citizenship Act, The (U.S. Law) | - | 22 | 22 |
| Indian Creek Massacre, The (1832) | | | 21 |
| Indian Hank (see: Swilling, Hank) | | | 0 |
| Indian Heroes and Great Chieftains (Book, History) | - | - | 02 |
| Indian Peace Commission (U.S. Gov) | - | - | 01, 19, 29, 32 |
| Indian Removal Act (U.S. Gov) | - | - | 22 |
| Indian Reorganization Act, The (1934) | | | 25 |
| Indian Territories | - | - | 46, 48 |
| Indian Territory (Oklahoma) | | | 08, 44 |
| Indian Wars (1830's to 1890's) | | | 01, 03, 07, 15, 19, 30, 36, 38 |
| Ingraham, Colonel Prentis | - | - | 26, 33 |
| Innocents, The (Criminal Gang) | - | - | 02 |
| Iron Crow (Sioux Chief) | | | 18 |
| Iron Mountain RR (1870's) | | | 05 |
| Irwin & Hirsig Wild West | - | - | 0 |
| Irwin, Col. Bernard J. (First Medal of Honor) | | | 07 |
| Isaiachlkis (Cayuse Indian) | - | 22 | 22 |
| Ishi ("The Last Wild Indian") | 1860-62? | 12 | 12, 35, 51 |
| Ishi:The Last of His Tribe (TV, 1978) | | | 51 |
