Ernest Hexamer
| Ernst Emil Julius Ferdinand Hexamer | |
|---|---|
| Hexamer, February 1889 | |
| Born | May 29, 1827 | 
| Died | December 3, 1912 (aged 85) | 
| Spouse | Mary Klingel (1835-1923)  (m. 1859–1923) | 
Ernst Emil Julius Ferdinand Hexamer (Koblenz, 29 May 1827 - Philadelphia, 3 December 1912) was a German-born American civil engineer. He was known as originator of a system of fire insurance maps, which by the time of his death were used by fire insurance companies in all parts of the world.