1990 Offaly Senior Hurling Championship

1990 Offaly Senior Hurling Championship
Champions St Rynagh's (14th title)
Martin Hanamy (captain)
Pad Joe Whelehan (manager)
Runners-up Birr
Michael Hogan (captain)
Ken Hogan (manager)
1989 (Previous) (Next) 1991

The 1990 Offaly Senior Hurling Championship was the 93rd staging of the Offaly Senior Hurling Championship since its establishment by the Offaly County Board in 1896.

Lusmagh entered the championship as the defending champions.

The final was played on 14 October 1990 at St Brendan's Park in Birr, between St Rynagh's and Birr, in what was their fourth meeting in the final overall. St Rynagh's won the match by 2–06 to 1–07 to claim their 14th championship title overall and a first championship title in three years.