Nicolas Sébastian Frey (born 6 March 1984) is a French professional footballer who plays for Italian club A.C. ChievoVerona as either a right back or a central defender.
Born in Thonon-les-Bains, Haute-Savoie, Frey played exclusively at amateur level in his country, joining AS Cannes' youth system at the age of 10 and appearing in two seasons for its reserves as a senior. In 2004, aged 20, he moved to Italy with A.C. Legnano, in Serie C.
After one year, Frey signed for Serie B club Modena FC, being an important first-team member during his spell and appearing in 62 league games in his last two years combined. In the summer of 2008, he joined A.C. ChievoVerona in a co-ownership deal along with Angelo Antonazzo, in exchange for Salvatore Bruno and Michele Troiano; he made his Serie A debut on 5 October 2008 in a 0–2 home loss against ACF Fiorentina, and finished his debut campaign with 21 league games as the Verona side retained their division status.