Stuart Leslie Devlin AO CMG (9 October 1931 – 12 April 2018) was an Australian artist and metalworker who specialised in gold and silver. He designed coins for countries around the world, and became especially well known as London-based designer of collectors' items in the 1970s and 1980s. He returned to teach in Melbourne and subsequently became an inspector of art schools. He rose to fame when, in 1964, he won a competition to design the first decimal coinage for Australia. Devlin died on 12 April 2018 at the age of 86.