The Budgewoi Lake is a lagoon that is part of the Tuggerah Lakes, that is located within the Central Coast Council local government area in the Central Coast region of New South Wales, Australia. The lake is located near the settlement of Budgewoi and is situated about 100 kilometres (62 mi) north of Sydney.

Drawing its catchment from a small creek and the southern half of Lake Munmorah, Budgewoi Lake is located north of Wallarah Point and is bounded by Toukley, Budgewoi, Buff Point, Charmhaven and Gorokan. To the south of the lake, the Tuggerah Lake drains excess water, that flows to the Tasman Sea of the South Pacific Ocean, via The Entrance. When full, Budgewoi Lake covers an area of around 1,400 hectares (3,500 acres).

• List of lakes of Australia

• "Lake Macquarie & Tuggerah Lakes catchments" (map). Office of Environment and Heritage. Government of New South Wales.