Francisco Viana

Francisco Guilherme dos Reis Viana (born 14 December 1999) is a Brazilian hurdler. He became South American champion in 2025 in the 400 metres hurdles.

Biography He is a member of Orcampi athletics club in São Paulo, Brazil. He won the gold medal in the 400 metres at the 2021 South American Under-23 Championships in Athletics in Guayaquil, Ecuador.

In June 2024, he won the Brazilian Athletics Championships title over 400 metres hurdles in a time of 50.13 seconds. he won the 400m hurdles at the Brazilian Athletics Championships in 50.47 seconds in São Paulo.

He won the gold medal in the 400 metres hurdles at the 2025 South American Championships in Athletics in Mar del Plata, Argentina in April 2025. That summer, he won the 400m hurdles at the Brazilian Athletics Championships in 49.13 seconds.

He was a semi-finalist in the 400 metres hurdles at the 2025 World Athletics Championships in Tokyo, Japan, running a personal best 48.69 seconds in the preliminary round.

In June 2026, he ran 48.96 seconds to win the bronze medal in the inaugural 400 metres hurdles final at the 2026 Pan American Championships in Athletics in Medellín.