Tinnahinch (Irish: Tigh na hInse[1]) 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 Éirinn óigh (Giolla na Naomh Ó hUidhrín, d. 1420): Ar Uíbh Riagáin na ruag ttrom gasraidh mhear mhuidheas comhlonn; Ó Duinn, taoiseach na toghla, cuing na ccraoiseach ccathordha.

"Over Uí Riagain of heavy routs, a vigorous tribe who fought in battle, is O'Duinn, chief of demolition, Hero of the golden battle-spears."

Settlements in Tinnahinch barony: