Justin O’Brien (b.1917, Sydney - d.1996, Rome, Italy) was a major Australian post-war figurative artist best known for his colourful and exuberant depictions of religious themes. A contemporary and friend of artists Jeffrey Smart, Margaret Olley, and Donald Friend – O’Brien, like a number of his peers, lived and worked abroad for much of his career. In addition to his religious paintings, O’Brien worked in still-life, portraits and landscapes.