Overview
Keanna Louise Macinnes (born 19 August 2001) is a British swimmer who competed at the 2024 Summer Olympics.
Career
Macinnes made her Commonwealth Games debut at the age of 16, in the Women's 100m Butterfly, Women's 200m Butterfly and the Women's Medley Relay. Four years later she competed in the same three events at the 2022 Commonwealth Games. In 2023 at the inaugural under-23 European Championships she won gold in the 100 and 200 metre butterfly events. She won the gold medal at the 2023 British Swimming Championships in the 100 metres butterfly. The success led to her selection for the 2023 World Championships. After winning both the 100 metres butterfly and the 200 metres butterfly at the 2024 Aquatics GB Swimming Championships, Macinnes sealed her place at the 2024 Summer Olympics. At the Olympic Games, Macinnes reached the semi finals of the women's 100 metre butterfly.
In 2025, Macinnes successfully defended her 200 metres butterfly title at the 2025 Aquatics GB Swimming Championships, which sealed a qualification place for the 2025 World Aquatics Championships in Singapore.