Leo McCrea (9 November 2003) is a British-Swiss Paralympic swimmer. He represented Switzerland at the 2024 Summer Paralympics, where he won a gold medal in the 100 metre breaststroke SB5 event. He started his competitive career at age 8, with Val Simmonds, Ellie Simmonds' mother, recommending that he join a club. He won multiple honours at the 2011 World Dwarf Games. McCrea is a Bournemouth University student.
Since April 2019, McCrea has represented Switzerland in international competitions. He competed in the 2019 World Para Swimming Championships in London, where he participated in the 50 m freestyle S6, 100 m breaststroke SB6, 100 m freestyle S6, 100 m freestyle S6, 200 m individual medley SM6, and 400 m freestyle categories. He finished 8th in the final of the 400 m freestyle. McCrea competed in the 2020 World Para Swimming European Open Championships in Funchal, Portugal, where he entered the 50 m freestyle S6, 100 m breaststroke SB5, and 400 m freestyle S6 categories. He reached the finals in all of these events.
McCrea qualified for the 2020 Summer Paralympics in Tokyo, Japan. He participated in the 100 m freestyle S6, 100 m breaststroke SB5, 200 m individual medley SM6, and 400 m freestyle S6 events. He reached the final of the 100 m breaststroke SB5 event, where he placed 5th.
He competed at the 2022 World Para Swimming Championships in Madeira, Portugal, in the 50 m freestyle S6, 100 m breaststroke SB5, and 100 m freestyle S6. He earned a silver medal in the 100 m breaststroke SB5 and reached the finals in the 100 m freestyle S6. At the 2023 World Para Swimming Championships in Manchester, England, McCrea participated in the 100 m breaststroke SB5, where he won a silver medal, and the 100 m freestyle S6 events.
At the 2024 World Para Swimming European Open Championships in Funchal, he won a bronze medal in the 100 m breaststroke SB5 event and he competed in the 200 m individual medley SM6 event. He qualified for the 2024 Summer Paralympics in Paris, France. He won a gold medal in the 100 m breaststroke SB5 event and he competed in the 200 m individual medley SM6 event.