David Luiz Moreira Marinho is a Brazilian professional footballer who plays as a defender for Campeonato Brasileiro Série A club Fortaleza. He is primarily a centre-back, but has also been deployed as a defensive midfielder.

David Luiz played with the Brazil under-20 team at the FIFA U-20 World Cup in 2007, with the team being ousted in the round of 16.

Courtesy of his solid season at Benfica, Luiz received his first call-up to Brazilian senior squad for a friendly match against the United States on 10 August 2010 after Mano Menezes replaced Dunga as national team coach. His debut ended in a 2–0 victory for Brazil. Prior to doing so, the Portuguese Football Federation had considered calling him up to their own national team.

David Luiz is a devout Evangelical Christian and has named Kaká as his role model. He said, "My faith gives me the belief that I can go out and perform and improve as a player. It gives me strength and inspiration." He later added, "Everything in life belongs to God. Our purpose has already been mapped out." He received baptism in May 2015 in the indoor swimming pool of his Brazil and PSG teammate Maxwell.