Barnsley, a historic market town in South Yorkshire, England, serves as the main settlement of the Metropolitan Borough of Barnsley. Known for its rich industrial heritage, Barnsley was historically significant in the linen, coal mining, glass making, and textiles industries. As of the 2021 Census, Barnsley had a population of 96,888, reflecting its status as the fourth largest settlement in South Yorkshire. The town is strategically located between major cities like Sheffield, Manchester, Doncaster, Wakefield, and Leeds, making it a crucial hub in the region.

The town's history dates back to the Domesday Book of 1086, where it was referred to as Berneslai. Significant development began in the 1150s when the town was under the control of the Pontefract Priory. The establishment of a market in 1249 under a Royal Charter and subsequent annual fairs helped Barnsley grow as a commercial center. The industrial era saw Barnsley at the heart of the linen weaving and later the coal industry, with numerous collieries operating until the late 20th century. Today, Barnsley is undergoing significant regeneration, focusing on developing a service-based economy while preserving its historical landmarks and supporting a vibrant cultural scene.