Woolsthorpe, also known as Woolsthorpe-by-Belvoir, is a village and civil parish in the South Kesteven district of Lincolnshire, England. It is situated approximately 5 miles (8 km) west from Grantham, and adjoins the county border with Leicestershire. The neighbouring village of Belvoir lies on the other side of the border. Grantham Canal is situated 1 mile (1.6 km) to the north-east at its closest point.