Clareville is a suburb in northern Sydney, in the state of New South Wales, Australia.

Clareville is 36 kilometres north-east of the Sydney central business district, in the local government area of Northern Beaches Council.

In the 1830s, two large land grants were made to a Catholic priest, Father John Joseph Therry (1790–1864), who had arrived in Sydney in May 1820.

The next most common countries of birth were England 9.4%, United States of America 1.8%, South Africa 1.7%, New Zealand 1.5% and Sweden 1.1%.

Other languages spoken at home included German 1.0%, Swedish 0.6%, Spanish 0.5%, Dutch 0.4% and Afrikaans 0.4%.