Donington on Bain is a village and civil parish in the East Lindsey district of Lincolnshire, England. It lies in the Lincolnshire Wolds about 6 miles (9.7 km) miles south-west of Louth and about six 6 miles (9.7 km) miles north of Horncastle. It sits on the east bank of the River Bain. The Viking Way runs north to south through the village.
Donington on Bain Grade II" listed late 12th century Anglican parish church is dedicated to St Andrew. It is of Early English style with an early Norman font. Within the church is a 17th century memorial to the poet Thomas Kent. The church is in the Asterby Group of churches of the Horncastle Deanery.
The village has a primary school. The village pub is the Black Horse on Main Road. Cadwell Park racetrack is about five miles away. The village also has a local football team that has been in existence since at least 1922, currently playing in the East Lincs Combination Division 2 at Donington Park on Station Road.
On either side of the valley sits a tower. It was reported in June 2009 that one of these, the tallest structure in the UK, Belmont mast, was to be reduced in height. The other is a World War II ACE High early warning relay station at RAF Stenigot.
Donington on Bain railway station served the village from 1875 to 1951.