Louisburgh is a small town on the southwest corner of Clew Bay in County Mayo, Ireland. It is home to the Gráinne O'Malley Interpretive Centre and is built on the Bunowen River, part of which is a salmon fishery.

There are a number of beaches in the area renowned for their cleanliness and each year, on the May Bank Holiday Weekend, the town hosts a traditional music festival - Féile Chois Chuan - which attracts a large number of enthusiasts from many parts of Ireland and abroad.

The main geographical features around Louisburgh are Croagh Patrick to the east, the Sheaffrey and Mweelrea Mountains to the south, the Atlantic to the west and Clew Bay to the north.

Nearby Roonagh Pier, approx 6 km from the town, is the departure point for ferries to Clare Island and Inishturk.