Mateus Daniel Adão de Sá (born 21 November 1995 in Dracena) is a Brazilian athlete specialising in the triple jump. He represented his country at the 2017 World Championships without reaching the final. Additionally, he won the bronze medal at the 2014 World Junior Championships. He competed at the 2020 Summer Olympics. His personal best in the event is 16.87 m (+0.5 m/s) set in São Bernardo do Campo in 2017.