The diocesan governor of Trondhjem stiftamt in Norway was a government agency of the Kingdom of Norway.
The title was Stiftamtmann (before 1919) and in 1919 all stiftamt were abolished in favor of equal counties (Norwegian: fylker).
The stiftamt (diocesan county) of Trondhjem was established in 1662 by the king.
The new Trondhjems stiftamt encompassed the whole Diocese of Trondhjem and it was originally made up the subordinate counties: Trondhjems amt, Vardøhus amt, and the Romsdal and Nordmøre bailiff's territories within Romsdalens amt.
The following is a list of the governors of the Trondhjems stiftamt.