Ferdinand Rudolph Hassler | |
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| Born | October 6, 1770 Aarau, Switzerland |
| Died | November 20, 1843 (aged 73) Philadelphia, Pennsylvania, United States |
| Resting place | Laurel Hill Cemetery |
| Scientific career | |
| Fields | Surveyor |
| Institutions | United States Military Academy United States Coast Survey United States Treasury Department |
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Ferdinand Rudolph Hassler (October 6, 1770 – November 20, 1843) was a Swiss-American surveyor who is considered the forefather of both the National Oceanic and Atmospheric Administration (NOAA) and the National Institute of Standards and Technology (NIST) for his achievements as the first Superintendent of the U.S. Survey of the Coast and the first U.S. Superintendent of Weights and Measures.