Brackenborough is a hamlet in the civil parish of Brackenborough with Little Grimsby, in the East Lindsey district of Lincolnshire, England. At the census 2011 the population was included in the civil parish of Keddington. It is situated approximately 2 miles (3 km) north from the town of Louth, and lies in the Lincolnshire Wolds, a designated Area of Outstanding Natural Beauty.
Listed in the 1086 Domesday Book with 15 households, Brackenborough is now a deserted medieval village with earthworks visible to the north and south-east of Brackenborough Hall.
Brackenborough Hall is a Grade II* listed building dating from the 17th century, with later alterations and additions, and built of red brick, which is open to the public. It is likely that it replaced an older building, and according to Lincolnshire Archives it was referred to in 1856 as "an ancient moated farmhouse". The stable block has been converted into holiday flats. In the grounds of the Hall is a Grade II listed Folly dating from 1863, built for James Robson, using building material from nearby Fotherby church, which was demolished the same year.