Petch may refer to:Henry Petch, partner of Perkins, Bacon & Petch Howard Petch (1925–2018), Canadian academic administrator Ivan Petch, former Australian politician Karen Petch, English broadcaster and news presenter Mark Petch, founder of Mark Petch Motorsport N. J. Petch, co-discoverer of the Hall-Petch relationship Tom Petch (1870–1948), English mycologist Rattana Petch-Aporn, Thai footballer