Diego Fabbrini (born 31 July 1990) is an Italian professional footballer who plays as a midfielder for Romanian Liga I club Dinamo București.
He has previously played for Empoli, Udinese and Watford, with loan spells at Palermo, Siena, Millwall, Birmingham City and Middlesbrough. He has been capped once for Italy.
He made his first team debut in August 2009. In his first season as a professional player, at 19 years old, he became a regular and made 32 appearances, scoring a solitary goal in the 2009–10 Serie B campaign.