The Trondheim–Stjørdal Line is a railway line in Norway that connects the city of Trondheim to the town of Stjørdal. It is part of the larger Nordland Line and serves as an important transportation route in the region. The line spans approximately 34 kilometers and features several stations along the way, facilitating travel for both commuters and tourists. Opened in 1882, the line has undergone various upgrades to improve efficiency and safety. It is primarily used by passenger trains operated by Vy, Norway's largest train company. The line also plays a crucial role in connecting the Trondheim Airport at Værnes, enhancing accessibility to air travel for residents and visitors.