Dee Why
| Dee Why Sydney, New South Wales | |||||||||||||||
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Dee Why Beach | |||||||||||||||
| Coordinates | 33°45′16″S 151°17′07″E / 33.7544°S 151.2854°E | ||||||||||||||
| Population | 23,354 (2021 census) | ||||||||||||||
| Postcode(s) | 2099 | ||||||||||||||
| Elevation | 20 m (66 ft) | ||||||||||||||
| Location | 18 km (11 mi) north-east of Sydney CBD | ||||||||||||||
| LGA(s) | Northern Beaches Council | ||||||||||||||
| State electorate(s) | |||||||||||||||
| Federal division(s) | Mackellar | ||||||||||||||
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Dee Why /diːˈwaɪ/ is a coastal suburb of northern Sydney, in the state of New South Wales, Australia, 18 kilometres north-east of the Sydney central business district. It is the administrative centre of the local government area of Northern Beaches Council.