The Regional State Archives in Trondheim is a part of the National Archives of Norway, covering the district of Møre og Romsdal, Sør-Trøndelag, Nord-Trøndelag og Nordland.
The Regional State Archives in Trondheim is responsible for receiving and making accessible to the public archival materials from local and regional government administration within its geographical district. Moreover, the Regional State Archives in Trondheim supervises the archival conditions in all local public administration bodies in the region. The Regional State Archives in Trondheim also works to preserve private archives that are worthy of preservation. Thus, the archive acts both as an administrative body and as a science-based cultural heritage institution. The holdings of the Regional State Archives in Trondheim fill some 25,000 shelf meters of storage space (2009).