Fishtoft is one of eighteen civil parishes which, together with Boston, form the Borough of Boston in the county of Lincolnshire, England. Local government has been arranged in this way since the reorganization of 1 April 1974, which resulted from the Local Government Act 1972. This parish forms an electoral ward in itself. Hitherto, the parish had formed part of Boston Rural District, in the Parts of Holland. Holland was one of the three divisions of the traditional county of Lincolnshire. Since the Local Government Act of 1888, Holland had been in most respects, a county in itself. The population of the civil parish at the 2011 census was 6,835.

Saint Guthlac of Crowland was a Christian hermit and saint from Lincolnshire in England. He is particularly venerated in the Fens of eastern England.