The Southern Main Line (Swedish: Södra stambanan) is a 483-kilometre (300 mi) long standard gauge electrified railway between Malmö and Katrineholm in Sweden.

The trains continue further on to Stockholm Central Station along the Western Main Line and terminate there (at platforms 16–19).

An unusual route was chosen as the line passed far from many of the bigger towns at the time, such as Hörby and Kristianstad.

A number of new towns sprung up or grew as the line brought access to the area, such as Eslöv and Hässleholm.

Both plans are delayed until further notice by the government, both for cost reasons, and awaiting the political discussion of how to improve the railway network.