| James T. McDermott | |
| State1: | Illinois |
| Term Start1: | March 4, 1915 |
| Term End1: | March 3, 1917 |
| Predecessor1: | James T. McDermott |
| Successor1: | Charles Martin |
| Term Start2: | March 4, 1907 |
| Term End2: | July 21, 1914 |
| Predecessor2: | Charles S. Wharton |
| Successor2: | James T. McDermott |
| Birth Date: | 13 February 1872 |
| Birth Place: | Grand Rapids, Michigan |
| Death Place: | Chicago, Illinois |
| Party: | Democratic |
James Thomas McDermott (February 13, 1872 - February 7, 1938) of Chicago was a Democratic U.S. Representative from Illinois's 4th congressional district, 1907 - 14, 1915 - 17.
He was born and raised in Grand Rapids, Michigan, where he attended a Catholic High School. He later moved to Detroit. He was a telegraph operator there for about four years. In 1889 he moved to Chicago where he become a tobacco retailer.