Michael Graham-Smith (born 5 August 1969 in Burnie, Tasmania) is an Australian cricket umpire. He made his umpiring debut in domestic cricket on 4 October 2013, during the Ryobi One-Day Cup. Graham-Smith taught mathematics at Elizabeth College in Hobart. On 15 October 2022, he stood in his first Twenty20 International (T20I) match on 15 October 2022, between Indonesia and South Korea.