| William Weir Stickney | |
| Office: | Judge of Probate for Rockingham County, New Hampshire |
| Term Start2: | 1850 |
| Term End2: | 1853 |
| Successor2: | John H. George |
| Office3: | Member of the New Hampshire House of Representatives for Exeter, New Hampshire |
| Term Start3: | 1855 |
| Term End3: | 1855 |
| Office4: | Member of the New Hampshire House of Representatives for Newmarket, New Hampshire |
| Term Start4: | 1839 |
| Term End4: | 1841 |
| Birth Date: | June 24, 1801 |
| Birth Place: | Enfield, New Hampshire |
| Death Date: | March 16, 1888 |
| Death Place: | Exeter, New Hampshire |
| Nationality: | American |
| Occupation: | Attorney |
| Spouse: | Frances A. Hough, m. November 5, 1860. |
| Alma Mater: | Dartmouth |
William Weir Stickney (24 Jun 1801 – 16 Mar 1888) was an American attorney and politician who served as the United States Attorney for the District of New Hampshire.
Stickney was born on June 24, 1801, in Enfield, New Hampshire, to Daniel and Sarah (Morse) Stickney. He graduated from Dartmouth College in 1823. He was admitted to the New Hampshire bar in 1826. Stickney practiced law in Concord, Newmarket, and Exeter, New Hampshire.
Stickney served twice in the New Hampshire House of Representatives. He represented Newmarket from 1839 to 1841, and Exeter in 1855.
In 1849, Stickney was appointed the United States Attorney for the District of New Hampshire. In 1857, Stickney was appointed the Judge Probate of Rockingham County, New Hampshire.
Stickney married Frances A. Hough on November 5, 1860. The couple had three children.