Lisdoonvarna ("fort of the gapped keep") is a spa town of 739 people (2011 census) in County Clare in Ireland. The town is famous for its music and festivals. Although the music festival was discontinued in the 1980s, Lisdoonvarna still hosts its annual matchmaking festival each September.

The town is located in the area of County Clare known as the Burren, on the N67 road between Ballyvaughan and Ennistymon. The Aille river flows through the town, where it is joined by the Gowlaun and Kilmoon streams.

The town is in the civil parish of Kilmoon. Nearby townlands in this parish include Ballyinsheen Beg, Ballyinsheen More, Rathbaun and Rooska.

In September each year one of Europe's largest matchmaking events is held in the town attracting upwards of 40,000 romantic hopefuls, bachelor farmers and accompanying revellers. The month-long event is an important tourist attraction. The current matchmaker is Willie Daly, a fourth-generation matchmaker.

A now-defunct music festival which took place near the town is celebrated in a song of the same name written by the Irish folk singer Christy Moore. This festival took place until 1983, when the last event was marred by a riot and the accidental drowning of eight people.