Biscathorpe is an ecclesiastical parish, deserted medieval village and former civil parish, now in the parish of Gayton le Wold, in the East Lindsey district of Lincolnshire, England, on the River Bain, 1 mile (1.6 km) south-west of Gayton le Wold, 6.5 miles (10.5 km) west of Louth, and to the south of the A157. It is a Conservation Area managed by DEFRA, and is traversed by the Viking Way. In 1931 the parish had a population of 26. On 1 April 1936 the civil parish was abolished and merged with Gayton le Wold.