Costock is a village and civil parish in the Rushcliffe district of Nottinghamshire, England.

St Giles's Church, built in 1350, stands back from the main street of the village.

9 bus service between Nottingham and Loughborough operates at least once an hour, seven days a week.

The German author and traveller K. P. Moritz stayed the night while on a walking tour of England in 1782, however his diary erroneously refers to the village as Castol: "At Castol there were three inns close to each other, in which, to judge only from the outside of the houses, little but poverty was to be expected.

I felt some degree of fever, was very restless all night, and so I kept my bed very late the next morning, until the woman of the house came and aroused me by saying she had been uneasy on my account.