| Nathan Webb | |
| Office: | Judge of the United States District Court for the District of Maine |
| Term Start: | January 24, 1882 |
| Term End: | June 30, 1902 |
| Appointer: | Chester A. Arthur |
| Predecessor: | Edward Fox |
| Successor: | Clarence Hale |
| Birth Name: | Nathan Webb |
| Birth Date: | 7 May 1825 |
| Birth Place: | Portland, Maine |
| Death Place: | Portland, Maine |
| Education: | Harvard University (A.B.) read law |
Nathan Webb (May 7, 1825 – November 8, 1902) was a United States district judge of the United States District Court for the District of Maine.
Born in Portland, Maine, Webb received an Artium Baccalaureus degree from Harvard University in 1846 and read law to enter the bar in 1849. He was in private practice in Portland from 1849 to 1865, becoming county attorney of Cumberland County, Maine in 1866. He was the United States Attorney for the District of Maine from 1870 to 1878, thereafter resuming his private practice in Portland until 1882.
On January 18, 1882, Webb was nominated by President Chester A. Arthur to a seat on the United States District Court for the District of Maine vacated by Judge Edward Fox. Webb was confirmed by the United States Senate on January 24, 1882, and received his commission the same day. Webb served in that capacity until his retirement from the bench on June 30, 1902. He died in Portland on November 8, 1902.