Fabian Frei (born 8 January 1989) is a Swiss footballer who currently plays as a midfielder for FC Basel. Until June 2011, he played for the Swiss U-21 team. He made his international debut for Swiss senior team on 7 October 2011. He was selected to represent Switzerland at the 2012 Summer Olympics. He is of no relation to former club and country team mate Alexander Frei.
Born in Frauenfeld, Frei started his youth football with FC Frauenfeld and FC Winterthur, but he came through the ranks at FC Basel. With Basel he was Swiss Champion at both U-16 and U-18 levels. During the 2006–07 season, Frei played in the U-21 team, he played so well that he was given a professional contract. Because he was one of the best midfielders in the U-21 side, ahead of the 2007–08 season Frei was called into the first team squad.
Frei played his first team debut on 22 July 2007 in the 1–0 home win against FC Zürich. He played a major part in Basel's title and cup win in the 2007–08 season. He scored his first goal for the club on 4 December 2008 during Basel's 3–1 win over FC Aarau in the St. Jakob-Park Stadium. Frei played his first Europa League game, as substitute, on Thursday, 16 August 2007 in the Qualifier against SV Mattersburg. He played his UEFA Champions League debut for Basel on 26 November 2008 in the 5–0 away defeat against Shakhtar Donetsk.