Lough Derg Yacht Club (LDYC) is based in the lakeside village of Dromineer, County Tipperary, on the east shore of Lough Derg.

Founded in 1835, it ranks among the oldest yacht clubs in the world and has long been a hub for sailing on this 40-kilometre freshwater lake.

The club's private harbour includes two mooring areas, two launching slips, three jetties, and secure parking for up to 150 dinghies. Classes sailed here include the Shannon One-Design, National Squib keelboat, International Laser, and International Mirror.

The RNLI Lough Derg Lifeboat Station — the first inland lifeboat station in Ireland — is also located on the club's premises. LDYC runs competitive racing and structured sail-training programmes for juniors, young adults, and senior members.

The tide-free, current-free lake and natural shelter from most wind directions make it a particularly accessible venue for getting on the water.