Lake Tarleton is a 334-acre (1.35 km2) water body located in Grafton County on the western edge of the White Mountains in New Hampshire, United States.

Water from Lake Tarleton flows via Eastman Brook west to the Connecticut River.

The Appalachian Trail runs nearby on Mount Mist, then continues north to Mount Moosilauke, with both mountains overlooking the lake.

The lake is classified as a cold- and warmwater fishery, with observed species including rainbow trout, brown trout, lake trout, smallmouth bass, chain pickerel, and horned pout.

This New Hampshire state location article is a stub.