Sidonie Fiadanantsoa (born 30 April 1999) is a track and field athlete from Madagascar. She was a silver medalist at the 2023 African Games in the 100m hurdles.
Career She is a member of the Dakar Athletics Development Center. She ran a 60m hurdles personal best at the 2022 World Athletics Indoor Championships, in Belgrade. She competed in the 100m hurdles at the 2022 World Athletics Championships, in Eugene, Oregon.
She was a gold medalist in the 100m hurdles at the 2023 Francophone Games in Kinshasa in a time of 13.01 seconds. She subsequently competed at the 2023 World Athletics Championships, in Budapest.
In February 2024, she set a new 60m hurdles personal best time in Mondeville in France. In March 2024, she was the flag bearer for her country at the 2023 Africa Games in Accra, Ghana. She won a silver medal in the 100m hurdles, running a time of 13.19 seconds to finish second behind Tobi Amusan.
In June 2024, she won bronze at the African Championships in Douala, Cameroon. She competed in the 100m hurdles at the 2024 Paris Olympics.
In September 2025, she competed at the 2025 World Athletics Championships in Tokyo, Japan.
International competitions Representing 2019African GamesRabat, Morocco7th (h)100 m hurdles13.6815th4 × 100 m relay46.022022World Indoor ChampionshipsBelgrade, Serbia31st (h)60 m hurdles8.22African ChampionshipsPort Louis, Mauritius6th100 m hurdles13.496th4 × 100 m relay46.48World ChampionshipsEugene, United States34th (h)100 m hurdles13.572023Jeux de la FrancophonieKinshasa, DR Congo1st100 m hurdles13.01World ChampionshipsBudapest, Hungary37th (h)100 m hurdles13.182024African GamesAccra, Ghana2nd100 m hurdles13.19African ChampionshipsDouala, Cameroon3rd100 m hurdles12.98Olympic GamesParis, France14th (rep)100 m hurdles13.122025World Indoor ChampionshipsNanjing, China16th (sf)60 m hurdles8.11World ChampionshipsTokyo, Japan36th (h)100 m hurdles13.272026African ChampionshipsAccra, Ghana5th100 m hurdles13.50 1Did not finish in the final
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