| Robert J. Letourneau | |
| State Senate: | New Hampshire |
| State: | New Hampshire |
| District: | 19th |
| Term Start: | December 1, 2004 |
| Term End: | December 1, 2010 |
| Predecessor: | Frank Sapareto |
| Successor: | James B. Rausch |
| Birth Date: | 9 October 1942 |
| Birth Place: | Lawrence, Massachusetts |
| Spouse: | Anne-Marie |
| Party: | Republican |
Robert J. Letourneau is a Republican former member of the New Hampshire Senate, representing the 19th District starting in 2004 and ending in 2010. Previously he was a member of the New Hampshire House of Representatives from 1996 until 2004.