Liffey Sound FM is a not-for-profit community radio station broadcasting to the suburban town of Lucan, County Dublin and its environs, broadcasting on the frequency 96.4 MHz. The station is operated by Liffey Sound Communications Co-Operative Society Limited. The station broadcasts under a sound broadcasting contract from the Broadcasting Authority of Ireland. Liffey Sound FM is a member of CRAOL, the Community Radio Forum of Ireland.
Liffey Sound participate annually in the Lucan Festival, streaming live and commentating on the events.