County Laois (/liːʃ/ LEESH; Irish: Contae Laoise) is a county in Ireland. It is part of the Eastern and Midland Region and in the province of Leinster. It was known as Queen's County from 1556 to 1922. The modern county takes its name from Loígis, a medieval kingdom. Historically, it has also been known as County Leix.
Laois County Council is the local authority for the county, and is based in Portlaoise.