María José Ribera

María José Ribera is a Bolivian swimmer. She competed in the women's 50 metre backstroke event at the 2017 World Aquatics Championships.
At the Paris 2024 Olympic Games, Ribera participated in the Swimming at the [2024 Summer Olympics – Women's 50 metre freestyle|Women's 50 metre freestyle] event on 3 August where she was initially recorded in 28th position. However she subsequently tested positive for furosemide and was retrospectively disqualified on 29 August. She was then issued with a provisional suspension by World Aquatics that commenced in October 2024.
In November 2025, the Court of Arbitration for Sport issued Ribera with a 16-month ban backdated to October 2024 for the positive doping test which was deemed as unintentional. The CAS report revealed that her physician, Dr Matheus Das Neves Borgo, had erroneously requested for furosemide to added to a made-to-order supplement that Ribera subsequently used without sufficiently checking the ingredients. Dr Borgo received a six-year ban.