Clontarf (Irish: Cluain Tarbh, meaning "meadow of the bull") is a suburb of northern Sydney, in the state of New South Wales, Australia.

The son of Queen Victoria, Prince Alfred, Duke of Edinburgh, visited Clontarf in 1868 where he was shot in the back by an Irishman, Henry James O'Farrell.

Alfred was saved because the bullet struck him at a point where his India-rubber braces, holding his trousers up, crossed over.

The next most common countries of birth were England 11.2%, China 3.0%, New Zealand 1.9%, South Africa 1.6% and United States of America 1.4%.

Other languages spoken at home included Mandarin 4.0%, Greek 2.1%, Italian 1.1%, French 0.7% and Cantonese 0.7%.