Iúri Gabriel Dantas Leitão (Portuguese pronunciation: [ˈjuɾi ɡɐbɾiˈɛl ˈdɐ̃tɐʃ lejˈtɐ̃w̃]; born 3 July 1998) is a Portuguese road and track cyclist, who currently rides for UCI ProTeam Caja Rural–Seguros RGA.

He won a silver medal in the elimination event at the 2021 World Championships.

Two years later, Leitão took the highest place on the podium after winning the 2023 World Championships omnium event, becoming the first Portuguese rider to win a world championship title in track cycling.

Competing in his first Olympic Games in Paris 2024, he won a gold medal in the Madison event alongside Rui Oliveira and the silver medal in the omnium event, making him the first Portuguese track cyclist to win an Olympic medal, the first Portuguese sportsperson to win two Olympic medals in a single edition, and his country's first-ever Olympic champion in a sport other than athletics.