The 1973 Clare Senior Hurling Championship was the 78th 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 9 September 1973 at Cusack Park in Ennis, between Newmarket-on-Fergus and Clarecastle, in what was their first meeting in the final in two years. Newmarket-on-Fergus won the match by 7âÂÂ10 to 4âÂÂ16 to claim their 18th championship title overall and a third championship title in succession.