Nicolosi () is a (municipality) in the Metropolitan City of Catania in the Italian region Sicily, located about southeast of Palermo and about northwest of Catania.
Nicolosi borders the following municipalities: Adrano, Belpasso, Biancavilla, Bronte, Castiglione di Sicilia, Maletto, Mascalucia, Pedara, Randazzo, Sant'Alfio, Zafferana Etnea.
Nicolosi is twinned with: