Ayrton Lucas Dantas de Medeiros (born 19 June 1997), known as Ayrton Lucas, is a Brazilian footballer who plays for Russian Premier League club Spartak Moscow as a left back.
Born in Carnaúba dos Dantas, Ayrton Lucas started his youth career with the academy of ABC Futebol Clube and joined the academy of Fluminense in October 2014. 0n 8 August 2015, he was promoted to the senior team However, he soon lost his position to Léo Pelé and Giovanni and was subsequently loaned out to Madureira on 23 February 2016 for the Campeonato Carioca. In April, he returned to his parent club.
On 4 January 2017, Ayrton Lucas was loaned out to Londrina. Twenty-five days later, he made his first team debut in a 1–1 draw against Prudentópolis. On 13 April, he scored his first goal for the club in a 3–0 victory against Rio Branco. Londrina went on to win the Primeira Liga, with Ayrton Lucas finding the net during the penalty shoot-out in the final against Atlético Mineiro.