| Thomas Nelson Hastings | |
| Office: | President of the New Hampshire Senate |
| Term Start: | 1899 |
| Term End: | 1901 |
| Successor: | Bertram Ellis |
| Birth Date: | May 23, 1858 |
| Death Date: | May 15, 1907 |
| Spouse: | Amy Bridge |
Thomas Nelson Hastings (May 23, 1858 – May 15, 1907) was an American politician and architect who served as the President of the New Hampshire Senate.
On January 4, 1899 Hastings was chosen as the President of the New Hampshire Senate.
Hastings died at the Parker House Hotel in Boston on May 15, 1907.