Tinnahinch () is a barony in County Laois (formerly called Queen's County or County Leix), in Ireland.
The southern part of Tinnahinch was called Gailine, and it is mentioned in the topographical poem Tuilleadh feasa ar ÃÂirinn óigh (Giolla na Naomh àhUidhrÃÂn, d. 1420):
Settlements in Tinnahinch barony: