The A631 is a road running from Sheffield, South Yorkshire to Louth, Lincolnshire in England. It passes through the counties of South Yorkshire, Nottinghamshire and Lincolnshire. The road has many towns on its route including Rotherham, Maltby, Gainsborough and Market Rasen. It is mostly single road throughout its length but has some stretches of dual carriageway as well.

Maltby is a former mining town and civil parish in the Metropolitan Borough of Rotherham, South Yorkshire, England. It was historically in the West Riding of Yorkshire. It is located 6 miles (10 km) east of Rotherham and 10 miles (16 km) north-east of Sheffield. It forms a continuous urban area with Hellaby, separated from the rest of Rotherham by the M18 motorway. It had a population of 16,688 at the 2011 Census.