2018 Offaly Senior Hurling Championship

The 2018 Offaly Senior Hurling Championship was the 121st staging of the Offaly Senior Hurling Championship since its establishment by the Offaly County Board in 1896. The championship ran from 31 March to 8 October 2018.

Kilcormac–Killoughey entered the championship as the defending champions.

The final was played on 7 October 2018 at Bord na Móna O'Connor Park in Tullamore, between Coolderry and Kilcormac–Killoughey, in what was their first ever meeting in the final. Coolderry won the match by 2–17 to 0–17 to claim their 31st championship title overall and a first title in three years.

From championship
Relegated to the Offaly Senior B Hurling Championship
 * Clodiagh Gaels
 * Lusmagh
 * Shamrocks
 * Tullamore