New Hampshire's 10th State Senate district is one of 24 districts in the New Hampshire Senate. It has been represented by Democrat Donovan Fenton since 2022.
District 10 currently comprises most municipalities in Cheshire County and a small portion of western Hillsborough. It includes Alstead, Chesterfield, Dublin, Harrisville, Keene, Marlborough, Nelson, Roxbury, Sullivan, Surry, Swanzey, Walpole and Westmoreland. Additionally, it includes nearby Hancock and Peterborough.
The district is located entirely within New Hampshire's 2nd congressional district. It borders the states of Massachusetts and Vermont.
Elections prior to 2022 were held under different district lines.