The Tølløse Line (Danish: Tølløsebanen) (previously Høng-Tølløse Jernbane (HTJ) is a 50.8 km (31.6 mi) long[2] standard gauge single track local passenger railway line between Tølløse and Slagelse in the western part of the island of Zealand, Denmark.

The section from Høng to Slagelse opened on 1 May 1898 as part of the Slagelse-Værslev Line.

On 1 January 2009, Vestsjællands Lokalbaner was again merged with the operating companies of the East Line and the Lolland Line to form the railway company Regionstog A/S (RT) responsible for train operation on four local railways on the islands of Zealand, Lolland and Falster.

Regionstog A/S again merged with Lokalbanen A/S on 1 July 2015 to form the railway company Lokaltog A/S which is currently responsible for train operation and related passenger services on the Tølløse Line.

[1] Trains on the Tølløse Line are operated by the railway company Lokaltog.