Borgomaro is a comune in the Province of Imperia in the Italian region Liguria, located about 90 kilometres southwest of Genoa and about 13 kilometres northwest of Imperia. Borgomaro borders the following municipalities: Aurigo, Caravonica, Carpasio, Chiusanico, Lucinasco, Pieve di Teco, Prelà, Rezzo, and Vasia.