GSWR can refer to one of two former railway companies in the British Isles:
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Glasgow and South Western Railway
The Glasgow and South Western Railway (G&SWR) was a railway company in Scotland. It served a triangular area of south-west Scotland between Glasgow, Stranraer and Carlisle. It was formed on 28 October 1850 by the merger of two earlier railway ...
of Scotland (often "G&SWR")
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Great Southern and Western Railway
The Great Southern and Western Railway (GS&WR) was an Irish gauge () railway company in Ireland from 1844 until 1924. The GS&WR grew by building lines and making a series of takeovers, until in the late 19th and early 20th centuries it was the ...
of Ireland (often "GS&WR")
It can also refer to the
Georgia Southwestern Railroad
The Georgia Southwestern Railroad is a Class III short line railroad company that operates over of track in southwestern Georgia and southeastern Alabama. Beginning in 1989 as a division of the South Carolina Central Railroad on a pair of forme ...
.
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