Birr (from the Irish: Biorra)  is a town in County Offaly, Ireland. Once called Parsonstown, after the Parsons family who were local landowners and hereditary Earls of Rosse. It is also a parish in the Roman Catholic Diocese of Killaloe. Birr is a designated Irish Heritage Town with a carefully preserved Georgian heritage. Birr itself has graceful wide streets and elegant buildings. Many of the houses in John's Place and Oxmantown Mall have exquisite fanlight windows of the Georgian period.
Birr lies on the N52 and N62 national secondary roads. The routes are combined as they pass through Birr. The R439, R440 and R489 regional roads also terminate in the town.
Bus Eireann provide public transport services to the town. The Athlone to Limerick city service regularly passes through the town daily. Kearns privately owned bus service provides a number of direct bus services to Dublin from Birr.
Walk or cycle