Thorndike Pond is a 252-acre (1.02 km²)^[1] water body located in Cheshire County in southwestern New Hampshire, United States, in the towns of Jaffrey and Dublin. The pond is located at the base of Mount Monadnock. Water from Thorndike Pond flows north via Stanley Brook, then east via Nubanusit Brook to the Contoocook River, a tributary of the Merrimack River.

Thorndike Pond
Thorndike Pond Show map of New Hampshire Thorndike Pond Show map of the United States
Location	Cheshire County, New Hampshire
Coordinates	42°51′28″N 72°3′24″W / 42.85778°N 72.05667°W / 42.85778; -72.05667
Primary outflows	Stanley Brook
Basin countries	United States
Max. length	1.5 mi (2.4 km)
Max. width	0.5 mi (0.80 km)
Surface area	252 acres (1.02 km2)
Average depth	11 ft (3.4 m)
Max. depth	23 ft (7.0 m)
Surface elevation	1,158 ft (353 m)
Settlements	Jaffrey; Dublin

Whittemore Island is centrally located on the lake and contains a looping walking trail that is maintained by The Nature Conservancy.

The lake is classified as a warmwater fishery, with observed species including smallmouth and largemouth bass, chain pickerel, horned pout, and bluegill.^[1]