Siobhán Bernadette Haughey SBS (/ʃəˈvɔːn ˈhɔːhi/ shə-VAWN HAW-hee;[5][6] Chinese: 何詩蓓; Cantonese pronunciation: [hɔ˩ si˥ pʰuj˩];[4] born 31 October 1997) is a Hong Kong competitive swimmer.

[12] Haughey won gold and broke the meet record in the 100-metre freestyle at the World Junior Championships in 2013; she was the first Hong Kong swimmer to medal at the event.

[citation needed] In 2014, she gained another two silver medals in the women's 100-metre freestyle and 200m individual medley at the Youth Olympics, again setting a high place for the Hong Kong swimming team.

[14] At the 2016 Rio Olympics, Haughey won her heat in the 200-metre freestyle, but finished sixth in the semi-finals and thirteenth overall.

This marked the first time Hong Kong had a swimmer in a final at the long course World Championships meet.

[22] Later in the year, she followed up her performance at the Tokyo Olympics and the ISL with a historic gold medal in the 200-metre freestyle at the 2021 Short Course World Championships.

She added a silver medal to her tally with a runner-up finish in the 100-metre freestyle, trailing behind Emma McKeon.

[32] At the 2024 World Aquatics Championships, Haughey captured a bronze medal in the 100-metre breaststroke, behind China's Tang Qianting and Dutch swimmer Tes Schouten.

During the opening ceremony, Haughey and Cheung Ka-long were the flag bearers for the Hong Kong Olympic team.