The Pat O'Donnell & Co. Senior Hurling Championship, more commonly known as the Clare Senior Hurling Championship or Clare SHC, is an annual hurling competition organised by the Clare County Board of the Gaelic Athletic Association. It is contested by the top-ranking senior hurling clubs in Clare, Ireland. It is the most prestigious competition in Clare hurling. The competition has been won by twenty-three different clubs, nineteen of which have won it more than once. Newmarket-on-Fergus are the most successful club in the championship's history, with twenty-three titles.