Nevill Holt is a hamlet and civil parish in the Harborough district of Leicestershire, England. It is situated about 6 miles (10 km) northeast of Market Harborough, 5 miles (8 km) northwest of Corby and lies close to the borders with Northamptonshire and Rutland. It is on the north side of the Welland valley. According to the 2001 census the parish had a population of 28. At the 2011 census the population remained less than 100 and was included in the civil parish of Horninghold
Nevill Holt Hall is a Grade I listed building, dating back to before 1300. It is on a hilltop. There have been many alterations and additions in the 14th,15th,17th,18th,19th and 20th (and now 21st) centuries. The Cunard shipping family owned the estate from 1876 to 1912 and Nancy Cunard (1896–1965), writer, publisher and society hostess, was born here.
In 1919 the hall became a preparatory school, initially linked with Uppingham School. Run by the Phillips family from 1928, the school was an IAPS boarding school. In 1998 the school closed due to falling rolls.
In 2000, the Hall was bought and restored by Carphone Warehouse co-founder David Ross who had visited the prep school which a friend of his at Uppingham School had attended. Ross has built a theatre to seat 350 within the 17th century stable courtyard which had formerly housed a science laboratory, games/common room, carpentry workshop, indoor swimming pool, boxing ring and classrooms. In the summer, Nevill Holt hosts the Nevill Holt Opera festival.