The Osnabrück-Brackwede railway, also the called the Haller Willem, is a single-track branch line running through the Teutoburg Forest () from Osnabrück via Dissen-Bad Rothenfelde and Halle (Westf) to Brackwede in the German state of North Rhine-Westphalia. The line is known for its steep climb to the Teutoburg Forest, where a tunnel was omitted for cost reasons. The railway was built in 1886 in response to demands for a line from Osnabrück to Bielefeld. In 1984, the section from Osnabrück to Dissen-Bad Rothenfelde was closed for passenger traffic, freight traffic continued until 1991. After numerous protests this section of track was reactivated in 2005. The entire line is owned by Deutsche Bahn, but the section from Dissen-Bad Rothenfelde to Osnabrück has been leased to the Verkehrsgesellschaft Landkreis Osnabrück (transport company of Osnabrück district). The Brackwede-Dissen section is part of Deutsche Bahn's Münster-Ostwestfalen regional network (MOW).