Olympics-Only biological females, determined by gene screening, will be allowed at Olympic Games female events, says IOC

LAUSANNE, Switzerland, March 26 (Reuters) – Only biological female athletes, whose gender will be determined by a one-time gene-screening test, will be eligible to take part in female category events at Olympic Games from now on, the International Olympic Committee said on Thursday.

The IOC unveiled its new policy on the protection of the female category as part of its initiative to have a universal rule for competitors in female elite sports after years of fragmented regulation that led to some major controversies.

The IOC said all athletes wanting to qualify or take part in female category events at the Games would from now on undergo an SRY gene test to determine their eligibility.

“Based on scientific evidence, the IOC considers that the presence of the SRY gene is fixed throughout life and represents highly accurate evidence that an athlete has experienced male sex development,” the IOC said in a statement.

The IOC has long declined to apply any universal rule on transgender participation in the Olympics and in 2021 instructed international federations to come up with their own guidelines.

New IOC President Kirsty Coventry did a U-turn immediately after taking over in June last year, saying her organisation would take the lead for a uniform approach.

“At the Olympic Games, even the smallest margins can be the difference between victory and defeat,” Coventry said in the statement. “So, it is absolutely clear that it would not be fair for biological males to compete in the female category. In addition, in some sports it would simply not be safe.”

The new rules have no retroactive power and have no impact on grassroots or amateur sports.

Until Thursday transgender athletes were allowed to take part in the Olympics once cleared by their respective federations.

Only a handful of openly transgender athletes have taken part in the Games. New Zealand’s Laurel Hubbard became the first openly transgender athlete to compete in a different gender category to that assigned at birth when the weightlifter took part in the Tokyo Olympics in 2021.

U.S. President Donald Trump last year banned transgender athletes from competing in school, college and pro events in the female category in the United States, as Los Angeles prepares to host the 2028 Summer Olympics.

Trump, who signed the “Keeping Men Out of Women’s Sports” order in February 2025, has said he would not allow transgender athletes to compete at the LA Games.

(Reporting by Karolos Grohmann; Editing by Ros Russell)