Thompson and Meserve's Purchase is a township located in Coös County, New Hampshire, United States. The purchase lies entirely within the White Mountain National Forest. As of the 2010 census, the purchase had a population of zero.
In New Hampshire, locations, grants, townships, and purchases are unincorporated portions of a county which are not part of any town and have limited self-government.
Thompson and Meserve's Purchase is notable for encompassing the northern slope of Mount Washington, including a large portion of the Mount Washington Auto Road and the Cog Railway.