Rathangan (/ræˈθæŋɡən/; Irish: Ráth Iomgháin, meaning 'Iomghan's Fort') is a town in the west of County Kildare, Ireland. As of 2016, the population was 2,611. It is located 65 km (40 mi) from the centre of Dublin, and 14 km (8.7 mi) from Kildare, at the intersection of the R401, R414, and R419 regional roads. The Slate River and the Grand Canal run through the town. Rathangan is situated beside the Bog of Allen, and is in close proximity to the lowlands of the Curragh. In recent years, the town has grown significantly to become a big commuter base for people working in Dublin.