Flávio Vianna de Ulhôa Canto (born April 16, 1975 in Oxford, England) is a Brazilian judoka who competed in Men's 81 kg Judo. He won the bronze medal at the 2004 Olympic Games. He is founder and president of the Instituto Reação, and also presenter of TV shows Corujão do Esporte on TV Globo and Sensei on SportTV.
Flavio Canto was born in Oxford, England, where his father had a doctorate in nuclear physics. At two years old he came to Brazil and started Judo at fourteen. Despite having started Judo in a relatively advanced age, he could reach national level in only five years by training very hard. He married actress and presenter Fiorella Mattheis in 2013, divorcing in 2014.
Flávio Canto was selected in national team for the first time in 1995 when he won the bronze medal at the Pan American Games in Mar del Plata. In 1996 he got the 7th place at the Olympics in Atlanta and in 1999 was silver medalist in the Pan American Games in Winnipeg (Canada). He missed Sydney Olympic games qualification in 2000. He was Panam Games champion in 2003 in Santo Domingo. In 2004, in Athens, he eventually got the bronze olympic medal. World Ranking Leader U81kg in 2010 he retired from competition in 2012.