| Thomas Porter Hawley | |
| Office: | Judge of the United States District Court for the District of Nevada |
| Term Start: | September 9, 1890 |
| Term End: | June 30, 1906 |
| Appointer: | Benjamin Harrison |
| Predecessor: | George Myron Sabin |
| Successor: | Edward Silsby Farrington |
| Office1: | Justice of the Supreme Court of Nevada |
| Term Start1: | 1872 |
| Term End1: | 1890 |
| Predecessor1: | James F. Lewis |
| Successor1: | Rensselaer R. Bigelow |
| Birth Name: | Thomas Porter Hawley |
| Birth Date: | 18 July 1830 |
| Birth Place: | Milan, Indiana |
| Death Place: | San Francisco, California |
| Education: | read law |
Thomas Porter Hawley (July 18, 1830 – October 7, 1907) was a justice of the Supreme Court of Nevada and a United States district judge of the United States District Court for the District of Nevada.
Born in Milan, Indiana, Hawley read law to enter the bar in 1857. He was in private practice in Nevada City, California from 1858 to 1868, serving as a district attorney for Nevada County, California from 1863 to 1864. He relocated his private practice to Hamilton, Nevada from 1868 to 1870, and then to Eureka, Nevada until 1872. Hawley then served as a justice of the Supreme Court of Nevada from 1872 to 1890.
On August 30, 1890, Hawley was nominated by President Benjamin Harrison to a seat on the United States District Court for the District of Nevada vacated by Judge George Myron Sabin. Hawley was confirmed by the United States Senate on September 9, 1890, and received his commission the same day. Hawley retired from the bench on June 30, 1906. He died in San Francisco, California.