Hannah Casey

Hannah Casey (born 27 April 2006) is an Australian swimmer.

Career Casey competed at the 2023 World Aquatics Junior Swimming Championships and won gold medals in the 4×100 metre freestyle and 4×100 metre mixed freestyle relays, a silver medal in the 4×200 metre freestyle and a bronze medal in the 50 metre freestyle.

She made her World Aquatics Championships debut at the 2025 World Aquatics Championships and won gold medals in the 4 × 100 metre freestyle relay and 4 × 200 metre freestyle relay events.

In June 2026, she competed at the 2026 Australian Swimming Trials and was selected to represent Australia at the 2026 Commonwealth Games and 2026 Pan Pacific Swimming Championships. During the Commonwealth Games she won a gold medal in the 4 × 200 metre freestyle relay on 24 July 2026. The next day she won a gold medal in the 4 × 100 metre mixed freestyle relay. On 27 July 2026, she won a gold medal in the 4 × 200 metre freestyle relay. She finished the second leg in 1:55.43, six tenths of a second faster than her career-best of 1:56.09. In August 2026, she competed at the 2026 Pan Pacific Swimming Championships and won a gold medal in the 4 × 200 metre freestyle relay with a Pan Pacific Championships record time of 7:42.40.