Bilgola Beach is a suburb in Sydney’s Northern Beaches in the state of New South Wales, Australia. Bilgola Beach is 33 kilometres north-east of the Sydney central business district, in the local government area of Northern Beaches Council. It and Bilgola Plateau were gazetted as suburbs in 2012, dividing the previous suburb of Bilgola.

According to the 2011 census of Population, there were 3,863 residents in Bilgola (now the suburbs of Bilgola Beach and Bilgola Plateau). 71.7% of people were born in Australia. The most common other countries of birth were England 9.4%, New Zealand 1.7%, United States of America 1.4%, South Africa 1.0% and Germany 1.0%. 89.7% of people only spoke English at home. Other languages spoken at home included German 1.5%, Italian 0.6%, French 0.6%, Swedish 0.4% and Dutch 0.4%. The most common responses for religion in Bilgola were No Religion 27.8%, Anglican 24.9%, Catholic 21.2%, Uniting Church 4.1% and Presbyterian and Reformed 3.6%.

The main road connecting the northern part of the Barrenjoey Peninsula to the rest of Sydney, Barrenjoey Road, runs through Hewitt Park along the cliff line between Bilgola headland and Bilgola South headland. The road separates Bilgola Plateau from Bilgola Beach.