Manasawin Phetmalaikul (Thai: มนัสวินษ์ เพชรมาลัยกุล, born 19 May 1999) is a professional snooker player from Thailand. In 2023 he earned a two-year place on the World Snooker Tour.
When based in Darlington he would practise at the Q House Snooker Academy with the likes of Hossein Vafaei, Thepchaiya Un-Nooh, Mike Dunn, Sunny Akani, as well as Chinese professionals. However, he made the decision to relocate to Bangkok aged 23 years-old.
In June 2023 he reached the semi finals of the Asia/Oceania Q-school event held in Bangkok where he faced Hong Kong's Cheung Ka Wai. After winning he secured a two-year place on to the World Snooker Tour starting with the 2023–24 snooker season.
He secured his first win as a professional by beating Ben Woollaston at the 2023 Scottish Open on 31 October 2023. In January 2024, he pushed Mark Allen to a deciding frame, losing 5–4 at the 2024 German Masters.