Thimbleby is a village and civil parish in the East Lindsey district of Lincolnshire, England.

It is situated approximately 1 mile (1.6 km) west from the A158 road and the town of Horncastle.

Thimbleby is listed in Domesday Book of 1086 as "Stimbelbi", with 67 households, which at the time was considered very large.

[5] The village hall was built in 1856, originally as a school, and is Grade II listed.

[6] The old village pump survives, dating from 1857, standing in a three sided red-brick enclosure.