The Cheshire Military Museum is a military museum in Chester, Cheshire, England.
The museum covers the history of four British Army regiments connected with the County of Cheshire from 1685 onwards: the Cheshire Regiment, the Cheshire Yeomanry, the 3rd Carabiniers, the 5th Royal Inniskilling Dragoon Guards, and also the Eaton Hall Officer Cadet School. The museum is located in the former A block at Chester Castle. The building is recorded in the National Heritage List for England as a designated Grade I listed building.