Crangan Bay Central Coast, New South Wales
Crangan Bay
Coordinates	33°10′26″S 151°35′35″E / 33.174°S 151.593°E / -33.174; 151.593
Population	3 (SAL 2016)[1][2]
Postcode(s)	2259
Elevation	4 m (13 ft)
Location	24 km (15 mi) NNE of The Entrance 13 km (8 mi) SSW of Swansea 41 km (25 mi) SSW of Newcastle 46 km (29 mi) NNE of Gosford 123 km (76 mi) NNE of Sydney
LGA(s)	Central Coast Council
Parish	Wallarah
State electorate(s)	Swansea
Federal division(s)	Shortland
Suburbs around Crangan Bay: Gwandalan Nords Wharf Catherine Hill Bay Chain Valley Bay Crangan Bay Moonee Lake Munmorah Munmorah SCA Munmorah SCA

Crangan Bay is a coastal suburb of the Central Coast region of New South Wales, Australia, located between Budgewoi and Swansea on the bay of the same name. It is part of the Central Coast Council local government area.

The suburb is a bushland area currently undergoing urban development. The major land owners are the local aboriginal land council and land held by an urban development company and the Coal and Allied mining company, who intend to turn this area into a suburb.

There is a concrete recycling depot and gravel quarry on the northern end of the suburb which contains conglomerate used for road base. This product has been extensively used by Wyong Shire Council in the construction of local roads.

This bay is part of the greater Wallarah Peninsula and Lower Hunter bioregions.