Oswestry ( OZ-wəs-tree) (Welsh: Croesoswallt) is a market town, civil parish and historic railway town in Shropshire, England, close to the Welsh border. It is at the junction of the A5, A483 and A495 roads.
The town was the administrative headquarters of the Borough of Oswestry until that was abolished under local government reorganisation with effect from 1 April 2009. Oswestry is the third-largest town in Shropshire, following Telford and Shrewsbury. The 2011 Census recorded the population of the civil parish as 17,105 (up almost 10% from 15,613 in 2001) and the urban area as 16,660. The town is five miles (8 km) from the Welsh border, and has a mixed English and Welsh heritage.
Oswestry is the largest settlement within the Oswestry Uplands, a designated natural area and national character area.