Hemswell is a village and civil parish in the West Lindsey district of Lincolnshire, England. It is situated just north of the A631 on the Lincoln Cliff escarpment, 2 miles (3 km) west from Caenby Corner and 7 miles (11 km) east from Gainsborough. According to the 2001 Census it had a population of 309.

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.