- 2 Hill towns
- 1 Hill, Arthur (?1798-1884)
- 1 Hill, Henry, 1732-1798
- 1 Hillebrand & Wolf. Star Lock Works.
- 1 Hillegas, Michael, 1729-1804
- 2 Hiller, Joseph, 1748-1814
- 1 Hiller's Ax Factory
- 1 Hillis, N. Tackawana Mills
- 3 Hill-Keith-Physick House
- 3 Hillman, Charles Levitte, Architect
- 19 Hills
- 1 Hills Carpet Factory
- 4 Hills, John
- 1 Hillside Mill
- 4 Hinckley Knitting Mills (Aaron Jones & Sons)
- 1 Hindu-Buddhism
- 1 Hinduism
- 3 Hinkle's Grist Mill
- 1 Hinsdale, Doyle & Co.
- 1 Hippopotamus amphibius (species)
- 1 Hirsh & Bro. Umbrellas Parasols
- 1 Hirst-Roger Carpet Mills
- 115 Historiated initials
- 469 Historic buildings
- 14 Historic districts
- 2 Historic farms
- 1 Historic house museums (buildings)
- 198 Historic houses
- 182 Historic landscapes
- 9 Historic monuments
- 42 Historic parks
- 1 Historic sites
- 4 Historic towns
- 1 Historic trees
- 5 Historical pageants
- 23 Historical parks
- 9 Historical societies
- 12 Histories
- 2 History (discipline)
- 1 Hitchcock Bros.
