, known as Fabinho (Brazilian Portuguese: [faˈbĩɲu]), is a Brazilian professional footballer who plays as a defensive midfielder for Saudi Pro League club Al-Ittihad and the Brazil national team. A versatile player, Fabinho can also be deployed as a right-back or centre-back.

Fabinho began his career at Fluminense and subsequently transferred to Rio Ave in 2012. He spent his entire time in Portugal out on loan, first at Real Madrid Castilla, and made one substitute appearance for the first team. He spent five years at Monaco, playing 233 total games and scoring 31 goals, and he won Ligue 1 in the 2016–17 season. He was recognised a major player at the Monegasque club. Fabinho then transferred to Liverpool for a reported transfer fee of £39 million. In his debut season at Liverpool he won the UEFA Champions League. Victories in the UEFA Super Cup and in the FIFA Club World Cup preceded Fabinho playing a significant role in Liverpool winning the 2019–20 Premier League. He also won the FA Cup and EFL Cup with Liverpool in the 2021–22 season and won the FA Community Shield the following season. Fabinho has received much credit for his role in Liverpool's resurgence over the years. In 2023, Fabinho officially joined Saudi Pro League club Al-Ittihad.

Fabinho made his international debut for Brazil in 2015, and was part of their squads at the Copa América in 2015, 2016 and 2021, finishing in second place in the latter competition. Fabinho was also selected as part of Brazil's squad for the 2022 FIFA World Cup, a tournament in which they were knocked out in the quarter-finals.