Thornby is a village and civil parish in West Northamptonshire in England.

[3] The parish church is dedicated to St. Helen and is described by Pevsner as of little architectural interest.

[4] Thornby Hall is located off Naseby road and carries 17th century, with 19th- and 20th-century additions, for its Tudor style.

The house and grounds were used as a school for young people with severe emotional and behavioural problems, as a result of attachment difficulties which may have been rooted in early life trauma.

Stone House is c. 1700 and Thornby Grange was built in 1911 in the Stuart style.