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. Clareville is part of the Northern Beaches region.

According to the 2016 census of Population, there were 742 people in Clareville. 73.5% of people were born in Australia. The next most common countries of birth were England 10.7%, New Zealand 1.8%, United States of America 1.6%, South Africa 1.4% and Sweden 1.1%. 89.8% of people spoke only English at home. Other languages spoken at home included German 1.5%, French 1.3%, Danish 0.9%, Turkish 0.9% and Arabic 0.8%. The most common responses for religion in Clareville were No Religion, so described 40.7%, Anglican 22.0%, Catholic 19.5%, Uniting Church 5.8% and Not stated 4.6%.