James Arthur O'Connor (1792 – 7 January 1841) was an Irish painter.

James Arthur O'Connor was born 15 Aston's Quay, Dublin – the son of an engraver and printer, William O'Connor. O'Connor would become a distinguished landscape painter. He was self-taught, receiving just a few lessons from William Sadler. He travelled to London with Francis Danby and George Petrie, exhibiting at the Royal Academy in 1822. O'Connor visited France, Belgium, the Netherlands, and the Rhineland. He died poor, in Brompton, London, 7 January 1841. O'Connor was married – his wife's name was Anastatia.