John R. Hamilton (architect)

John Robert Hamilton (c. 1823 – 21 September 1874) was a nineteenth-century Scottish-American architect, active between 1840 and 1870.

Hamilton was born in Scotland, and had a significant practice in England before moving to North America in 1850. Between 1852 and 1859, in Cincinnati, Ohio, Hamilton's business thrived, with a long list of private homes, churches, and several major public buildings. He then moved to New York City, can be found in the American south as a traveling graphic journalist during and after the Civil War, and was again practicing architecture from New York in 1870.

He died in 1874 in New York.