Back Great Western Railway AN غريت ويسترن ريلوي Arabic جريت ويسترن ريلوى ARZ Great Western Railway Catalan Great Western Railway German Great Western Railway English Great Western Railway Spanish Great Western Railway French הרכבת המערבית הגדולה HE Great Western Railway Hungarian
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| Enghraifft o: | cwmni rheilffordd  |
|---|---|
| Daeth i ben | 1948 |
| Dechrau/Sefydlu | 1833 |
| Lled y cledrau | 2140 mm track gauge, 1435 mm |
| Sylfaenydd | Isambard Kingdom Brunel |
| Rhagflaenydd | Bristol and Exeter Railway, Buckfastleigh, Totnes and South Devon Railway, Rheilffordd Porth Tywyn a Chwm Gwendraeth, Rheilffordd Festiniog a Blaenau, Llynvi and Ogmore Railway, Severn Bridge Railway, South Devon Railway, Taff Vale Railway, Torbay and Brixham Railway, Vale of Neath Railway, Gwendraeth Valleys Railway |
| Olynydd | Western Region of British Railways |
| Pencadlys | Gorsaf reilffordd Paddington Llundain |
| Gwladwriaeth | y Deyrnas Unedig |
 Ffeiliau perthnasol ar Gomin Wicimedia | |
Cysylltodd Rheilffordd y Great Western (yn Saesneg: Great Western Railway, GWR) Lundain â de-orllewin a chanolbarth Lloegr a rhan helaeth o Gymru.