The Hildesheim Cathedral Museum is the cathedral treasury and museum of the Diocese of Hildesheim. It is located in historic rooms on the southern transept arm of the Cathedral.
From 2010, the neighbouring St. Anthony's Church and parts of the Cathedral cloister were converted into exhibition rooms for the Museum in order to facilitate the Cathedral renovation works. The new premises will open on 17 April 2015. The Cathedral Museum will then be accessible to visitors through the foyer of the Cathedral.