The Little South Line (Danish: Lille Syd) is a railway line on the Danish island of Zealand, formerly connecting the towns of Roskilde and Næstved by way of Køge.

The railway was built as part of the Zealand South Line (Danish: Sjællandske Sydbane) which was inaugurated on 4 October 1870.

[2] Since December 2020, the northern part of the Little South Line, between Køge and Roskilde, has been served by an extension of Østbanen.

[3][4] In April 2023, DSB started operating regional trains on the Næstved–Køge–Copenhagen route via the high speed Copenhagen–Køge Nord Line.

[5] This European rail transport related article is a stub.