Peter Leishman is an American politician. He serves as a Democratic member for the Hillsborough 33rd district of the New Hampshire House of Representatives.
In 2025, only two Democratic House members, Reps. Jonah Wheeler and Peter Leishman, both of Peterborough, voted against their party and in favor of House Bill 148 (a bill to eliminate transgender protections established by a 2018 anti-discrimination law). All other House and Senate members voted along party lines (Democrats against the bill, Republicans in favor of it).