The 1988 Offaly Senior Hurling Championship was the 91st staging of the Offaly Senior Hurling Championship since its establishment by the Offaly County Board in 1896.
St Rynagh's entered the championship as the defending champions.
The final was played on 23 October 1988 at St Brendan's Park in Birr, between Seir Kieran and St Rynagh's, in what was their second consecutive meeting in the final. Seir Kieran won the match by 3âÂÂ13 to 4âÂÂ06 to claim their first ever championship title.