Douglas Pereira dos Santos is a Brazilian defender who played for Goiás and São Paulo before Barcelona signed him in 2014. He made few appearances in Catalonia and was loaned to Sporting de Gijón in 2016-17, then to Benfica on 30 August 2017 for the 2017-18 season, where he made 11 appearances across the league and Champions League. He returned to Barcelona and was loaned to Sivasspor on 24 July 2018. He joined Beşiktaş in July 2019, suffered a femur injury in February 2020 and was released in 2022.