The 2015 Offaly Senior Hurling Championship was the 117th staging of the Offaly Senior Hurling Championship since its establishment by the Offaly Cound Board in 1896. The championship began on 17 April 2015 and ended on 18 October 2015.
On 18 October 2015, Coolderry won the championship following a 2–15 to 1–16 defeat of St Rynagh's in the final. This was their 30th championship title, their first in four championship seasons.[3]
Similarly, Kinnitty defeated Drumcullen by 0–17 to 0–12 in the 2014 senior relegation play-off, and so Drumcullen were relegated to the intermediate grade for 2015.