Sydney Curnow Vosper RWS, RWA (29 October 1866 – 10 July 1942) was an English painter and etcher of landscapes and figure subjects.
His later work has a close association with Wales and Brittany.
His most famous work is Salem (1908), which shows an old woman in the Welsh national costume, with Welsh hat and shawl, attending a service at Salem Baptist Chapel, Pentre Gwynfryn.