Hackthorn is a village and civil parish in the West Lindsey district of Lincolnshire, England. The population of the civil parish (including Cold Hanworth) at the 2011 census was 207. It is situated approximately 6 miles (10 km) north from the city and county town of Lincoln, and 1 mile (1.6 km) east from the A15. According to the 2001 Census it had a population of 180.
The village dates back to Roman times. Its most prominent building is its hall, a large square brick house, built in the late 18th century in a landscaped park of around 100 acres (0.40 km2).
Situated among the trees of the park overlooking the lake is the parish church, dedicated to St Michael and All Angels. A village church is mentioned in the Domesday Book, although the present church is a Victorian gothic building. It contains carved woodwork in the reredos screen and gallery, and an 1869 Nicholson Organ, fully restored in 2006.
There is also a primary school, post office, shop and village hall.