Cloghan (Irish: An Clochán) is a town in County Offaly, Ireland, located at the intersection of the N62 National secondary road and the R356 and R357 regional roads. It is one of the few places in the world in which a traffic roundabout is called "The Square". Cloghan was once one of Ireland's great centres of trade and ancient Roman coins have been discovered throughout the town and surrounding countryside.