The Hospital of the Holy Ghost, Aalborg (Danish: Helligåndsklostret i Aalborg), the buildings of which, although now without any religious function, are still known as Aalborg Kloster (lit. Aalborg Monastery), is a former establishment of the Order of the Holy Ghost in Aalborg, Denmark. It was the hospital of Aalborg from 1431 to 1953 and is one of Denmark's best preserved medieval establishments.