- 1 Harbor, New York
- 49 Harbors
- 1 Hard Times for These Times
- 1 Hard Work
- 1 Harding, F.G. Snuff Mill
- 2 Harding, Warren Gamaliel, 1865–1923
- 2 Hardings Bible Manufactory
- 1 Harding's Tavern
- 9 Hardward stores
- 15 Hardware
- 7 Hardware stores
- 1 Hardy Machine Co.
- 2 Hardy Patent Pick Co.
- 1 Hare, George Emlen, 1808-1892
- 1 Haredale, Emma (Fictitious character)
- 1 Haredale, Geoffrey (Fictitious character)
- 1 Harlan, Bill
- 1 Harley & Brenner (Knitting machinery)
- 3 Harley, John Pritt, 1786-1858
- 1 Harmen Gerritsz. van Rijn., c. 1568-1630.
- 8 Harmensz, Rembrandt. van Rijn.
- 3 Harmonicas
- 2 Harmonists
- 3 Harmony
- 1 Harmony, Pennsylvania
- 4 Harness, William, 1790-1869
- 4 Harnesses
- 1 Harper & Bros.
- 4 Harper & Brothers
- 1 Harpers Ferry National Historical Park, West Virginia
- 2 Harpers Ferry, West Virginia
- 3 Harper's Fork Factory
- 1 Harpers Hollow Park
- 1 Harper's Shovel Manufactory
- 11 Harper's weekly
- 74 Harps
- 2 Harpsichords
- 1 Harris Bottling
- 3 Harris Manufacturing Co.
- 2 Harris, R.S. Iron Proof Manufacturing
