Fulletby is a village and a civil parish in the East Lindsey district of Lincolnshire, England. It is in the Lincolnshire Wolds, and 3 miles (5 km) north-east from Horncastle, 9 miles (14 km) south from Louth, and 8 miles (13 km) north-west from Spilsby. The parish covers approximately 1,950 acres (8 km2). At the time of the 2011 census the population remained less than 100 and is included in the civil parish of Low Toynton.