Arthur Henrique Ramos de Oliveira Melo (born 12 August 1996), commonly known as Arthur Melo (Brazilian Portuguese: [ˈaʁtuʁ ˈmɛlu]) or simply Arthur, is a Brazilian professional footballer who plays as a midfielder for La Liga club FC Barcelona and the Brazil national team.

Born in Goiânia, he began his career at Grêmio winning the Copa Libertadores in 2017 and Campeonato Gaúcho in 2018. In his three years at Grêmio, Arthur established himself as a prospect which led Barcelona to sign him for an initial fee of €31 million in 2018. He's set to join Italian club Juventus once the current season ends.

Arthur made his senior debut for Brazil in 2018 after previously being capped by Brazil youth team at under-17 level. He was later part of the squad that won the 2019 Copa América.