Rathduff is a village and townland in Cork. It is split into two parts by the N20 national route from Cork to Mallow, with Lower Rathduff to its west and Upper Rathduff to its east. Cork City centre is around 18.5km to its south with Mallow 16km to its north. The River Martin flows through part of Rathduff, which is connected to Cork City and Mallow by a regular Bus Éireann service. Local amenities in Rathduff include a national school, pub, shop/filling station and community centre in Grenagh.