Clark received a bye to the second round of the 2016 English Open and then eliminated Lee Walker 4–2 and Kyren Wilson 4–3 (finished the match with 50 plus breaks in five successive frames) to advance to the last 16 of a ranking event for the first time and he lost 1–4 to Stuart Bingham. Clark earned a second round televised match with Ronnie O'Sullivan at the UK Championship after squeezing past Li Hang 6–5, but was whitewashed 0–6. He knocked out Sean O'Sullivan 4–1 and Mitchell Mann at the Gibraltar Open, before losing 2–4 to Neil Robertson Clark ended the season 75th in the world rankings, but has earned a new two-year tour card through the one-year ranking list.