Jack McMillan
Irish swimmer
- Born
- 14 January 2000, Belfast
- Age
- 26
Jack McMillan (born 14 January 2000) is a swimmer from Belfast, Northern Ireland, who competed for Ireland in the men's 4 × 200 metre freestyle relay at the 2020 Summer Olympics and in the same event for Great Britain at the 2024 Summer Olympics. McMillan won gold in the latter event as a heat swimmer. In 2025 he won his first major international individual title, taking gold in the 400 metre freestyle at the 2025 European Short Course Swimming Championships in Lublin.
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