Donna M. Soucy (born September 7, 1967) is an American attorney and Democratic member of the New Hampshire Senate, first elected in 2012 in the 18th district.

Soucy serves on the Senate Commerce, and Rules and Enrolled Bills committees, in addition to the Joint Fiscal Committee[1] Soucy has also previously served in the New Hampshire House of Representatives and as a Manchester alderman.

[2][3] Soucy's mother was Lillian Soucy, a New Hampshire state representative who died in 1990, the year after she graduated from Saint Anselm College in Goffstown, New Hampshire.

[3] First elected in 2012, Soucy became the minority leader in August 2018, after the incumbent Jeff Woodburn stepped down from his leadership post because he had been arrested on domestic violence charges.

[3] Soucy lost her bid for re-election to a seventh term on November 5, 2024.