The decision by the International Olympic Committee (IOC) to ban transgender women athletes from women's events has been widely criticized. The decision comes after IOC executives argued that "fairness and safety in the female category required clear, science-based eligibility rules, and that protecting the female category is a common priority."
IOC events, including individual and team sports, will now be limited to biological females. This will be determined by a mandatory gene test once in an athlete's career.
The policy is widely expected to be adopted by individual sports federations, although many have already implemented similar testing in recent months, including World Athletics and World Aquatics.
Over the years, the world of sport has seen many transgender athletes triumph in their chosen fields, including some at Olympic level. These individuals have become influential role models within the transgender community and an inspiration for budding young athletes everywhere.
But the topic of transgender athletes remains extremely controversial and has generated deeply polarized discussion and political debate.
This gallery lists 30 transgender athletes who, in spite of facing ridicule and hostile protest, have broken records, lifted trophies, and won Olympic medals. Click on and find out those who've achieved major success.