They have joined Ballinamere in the final four.
Kilcormac/Killoughey made it four wins from four in Group One of the Offaly Senior Hurling Championship on Sunday evening.
Shane Hand's side booked their place in the semi finals alongside Ballinamere thanks to their 1-21 to 2-14 win over Birr in Glenisk O'Connor Park.
Elsewhere, St Ryanghs had a more convincing victory over Kinnitty to seal second place in the same group.
The 2021 champions were 3-19 to 0-11 winners and will now face Coolderry in the quarter finals in two weeks time, with third place Birr taking on reigning champions Shinrone.
Kinnitty will meet Seir Kieran in the relegation final.
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