The 1966 Clare Senior Hurling Championship was the 71st staging of the Clare Senior Hurling Championship since its establishment by the Clare County Board in 1887.
Newmarket-on-Fergus entered the championship as the defending champions.
The final was played on 6 November 1966 at Cusack Park in Ennis, between ÃÂire ÃÂg and Whitegate, in what was their second meeting in the final overall. ÃÂire ÃÂg won the match by 2âÂÂ08 to 1âÂÂ04 to claim their third championship title overall and a first championship title in nine years.