The Union Building on Hospital Hill in Aldershot in Hampshire is a Grade II listed building on the Register of Historic England. A former sub-manor of the Tichborne Family, it was later used as the Aldershot Workhouse and as the District School set up in 1849/50 by two Poor Law Unions, referred to as the Union Building in the 1851 Census. It was later purchased as one of the first permanent Camp buildings of the British Army when it moved to the area in 1854.