Marine Lines is the name of an area in South Mumbai. It is also the name of a railway station on the Mumbai suburban railway.

The name is so due to its proximity to the Arabian Sea. Marine Drive is the famous promenade near the station. Marine lines does not have much of a west, the name Marine lines almost entirely refers to the area east of the station. It is just 300m from the sea shore on its western flank.

Almost all the northern bound fast trains halt at Marine Lines. Churchgate bound fast locals do stop at Marine Lines, but skip the station during the evening peak hours.

Marine Lines does not have a large residential population but has an enormous floating population consisting of office-goers, traders and shopkeepers.

Near the station there is a Muslim cemetery and a municipal crematorium. Also adjoining the station is the famous Marine Drive flyover which is the only link to Marine Drive over the tracks from beginning to end.

New Marine Lines is the area just south of the station near Churchgate. It is home to a great number of offices including the UTI , Income Tax office and various governmental agencies.