Dulyarit "Goh" Phuangthong (Thai: ดุลยฤทธิ์ พวงทอง; born December 31, 1977; nickname: 'Goh') is a Thai former professional swimmer who specialized in backstroke, butterfly and individual medley events. He is a two-time Olympian (1996 and 2000), a finalist in the 100m backstroke at the 2002 Asian Games, and a multiple-time medalist at the Southeast Asian Games since his debut in 1995. Phuangthong is now working as a swimming coach at St Andrews International School Bangkok.