The 1990 Clare Senior Hurling Championship was the 95th staging of the Clare Senior Hurling Championship since its establishment by the Clare County Board in 1887.
Sixmilebridge entered the championship as the defending champions.
The final was played on 7 October 1990 at Cusack Park in Ennis, between ÃÂire ÃÂg and O'Callaghan's Mills, in what was their first ever meeting in the final. ÃÂire ÃÂg won the match by 1âÂÂ05 to 1âÂÂ03 to claim their sixth championship title overall and a first title in eight years.