Mason Wilby (born 18 November 1999) is an English international swimmer.
[4] In 2017, at the Commonwealth Youth Games he won the 200 metres butterfly gold medal.
[3] Wilby won the silver medal behind James Guy in the 200 metres butterfly at the 2022 British Swimming Championships.
In 2022, he was selected for the 2022 Commonwealth Games in Birmingham where he competed in the men's 200 metres butterfly, reaching the final and finishing in 6th place.
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