John Arthur Lomax (1857–1923) was a British genre painter known for his historical scenes, particularly of the 17th and 18th centuries. Born in Manchester, he studied in Stuttgart and at the Munich Academy before returning to England, eventually settling in London. His work, often dramatic or sentimental, frequently depicted the English Civil War period. Lomax exhibited widely, including thirty-three paintings at the Royal Society of British Artists, as well as at the Royal Academy, Walker Art Gallery, and Manchester City Art Gallery. Notable works include Thoughts of Christmas, An Old Master, and Flaw in the Title.