Alison dos Santos is a track and field athlete who has competed for Brazil.
He competed at the 2020 and 2024 Summer Olympic Games.
In the 400 metres hurdles, dos Santos lowered his own South American record by an enormous margin earlier from the semifinal race to snare the final podium spot for the bronze under the 47-second barrier and the 28-year-old mark previously set by Kevin Young at Barcelona 1992. Moreover, his third-place time of 46.72 almost overhauled Karsten Warholm's pre-meet world record by two hundredths of a second.