The 1998 Clare Senior Hurling Championship was the 105th staging of the Clare Senior Hurling Championship since its establishment by the Clare County Board in 1887. The championship draw was made on 19 May 1998. The championship ran from 19 September to 15 November 1998.
The final was played on 15 November 1998 at Cusack Park in Ennis, between St Joseph's Doora-Barefield and Kilmaley, in what was their first ever meeting in the final. St Joseph's Doora-Barefield won the match by 3–09 to 2–07 to claim their third championship title overall and a first title in 40 years.[2][3][4]Scariff's Mark McKenna was the championship's top scorer with 0-21.
The championship underwent a format change with the introduction of the Clare Senior B Hurling Championship. Nineteen teams were classified as senior, however, eight of these contested the B grade championship. This championship was divided into two groups of four with each team playing the other three in the group. The top team from each group qualified for the quarter-finals of the championship proper.