- Iddings, Henry, 1762-18541
- Iden, Mrs. Gay, Collector1
- Illig, John S. (John Stephens), 1825-19031
- Independent Order of St. Luke (Blacksburg, Va.)1
- Infant Sanitarium (Virginia Beach, Va.)1
- Inge, M. Thomas1
- Ingersoll, Charles Jared, 1782-18621
- Ingersoll, T. W. (Truman Ward), 1862-19222
- Ingram, John Henry, 1842-19161
- Institute for the History of Technology and Industrial Archaeology1
- International Association for Identification1
- International Order of Odd Fellows. Lodge 134 (Brandonville, W. Va.)1
- International Order of the King's Daughters and Sons. North River Circle (Gloucester County, Va.)1
- International View Co.2
- Irby, Mabel1