|Location||Belknap County, New Hampshire|
|Primary inflows||Dolloff Brook|
|Primary outflows||tributary of Lake Winnisquam|
|Basin countries||United States|
|Max. length||1.7 mi (2.7 km)|
|Max. width||1.1 mi (1.8 km)|
|Surface area||350 acres (1.4 km2)|
|Average depth||13 ft (4.0 m)|
|Max. depth||35 ft (11 m)|
|Surface elevation||504 ft (154 m)|
Lake Wicwas, also known as Wickwas Lake, is a 350-acre (1.4 km2) water body in the Lakes Region of central New Hampshire, United States, in the town of Meredith. Water from Lake Wicwas flows south to Lake Winnisquam, then to the Winnipesaukee River, and ultimately to the Merrimack River.
Longstanding disagreement about how to spell the name of the lake led locals in 2019 to request that the state officially designate it as "Wicwas" without a K. The requested spelling was adopted by the U.S. Board on Geographic Names in November 2019.
- U.S. Geological Survey Geographic Names Information System: Lake Wicwas
- "Variant name: Wickwas Lake". Geographic Names Information System. United States Board on Geographic Names. Retrieved July 28, 2020.
- New Hampshire GRANIT database
- "Wicwas Lake, Meredith" (PDF). NH Fish & Game. Retrieved September 5, 2014.
- Concord Monitor: "What a difference a K makes, to a Meredith lake" Feb. 3, 2019