Rossmore Quay is a small pier and boat-launch point on the western shore of Lough Derg, in County Galway, Ireland.

The site features an old boathouse and offers direct access to the lake, making it a practical starting point for paddlers and boaters exploring this stretch of the Shannon waterway. The quay serves as the trailhead for a 6.

3-kilometre paddling route to Illaunboe Quay at Coos Bay, rated suitable for intermediate paddlers with good fitness and self-rescue capability. The surrounding bay is also a popular spot for anglers, with coarse fishing available along the shore.