W
- Warhawk
- GWR Standard Goods 0-6-0 (1861 - 1877)
- Warlock (Magician: Warlock)
- GWR Iron Duke class 4-2-2 (1848 - 1874)
- GWR Rover class 4-2-2 (1876 - 1892)
- Warrior (Power: Warrior)
- GWR Standard Goods 0-6-0 (1861 - 1872)
- Wasp (Insect: Wasp)
- GWR Metropolitan class 2-4-0T (1862 - 1875)
- Watt (Famous engineer: James Watt)
- GWR Victoria class 2-4-0 (1863 - 1880)
- Waverley (Literary: Waverley)
- GWR Waverley class 4-4-0 (1855 - 1876)
- Wear (Geography: River Wear)
- GWR Standard Goods 0-6-0 (1859 - 1879)
- Weasel (Animal: Weasel)
- SDR Owl class 0-4-0WT (1873 - 1882)
- Wellington (Famous people: Arthur Wellesley, 1st Duke of Wellington)
- GWR Standard Goods 0-6-0 (1853 - 1873)
- Western Star
- GWR Star class 2-2-2 (1841 - 1866)
- Whetham
- GWR Sir Watkin class 0-6-0T (1866 - 1889)
- Wickwar (Geography: Wickwar)
- BGR 2-2-2 (1844 - 1853)
- Wild Fire (Power: Wildfire)
- GWR Fire Fly class 2-2-2 (1840 - 1867)
- Windsor (Geography: Windsor)
- GWR Swindon class 0-6-0 (1866 - 1873)
- Witch
- GWR Prince class 2-2-2 (1846 - 1870)
- Wizard (Magician: Wizard)
- GWR Iron Duke class 4-2-2 (1848 - 1875)
- Wolf (Animal: Wolf)
- GWR Sun class 2-2-2 (1841 - 1873)
- SDR Eagle class 4-4-0ST (1859 - 1878)
- Wolverhampton (Geography: Wolverhampton)
- GWR Swindon class 0-6-0 (1866 - 1874)
- Wood
- GWR Hawthorn class 2-4-0 (1866 - 1892)
- Wye (Geography: River Wye)
- GWR Standard Goods 0-6-0 (1859 - 1879)
Read more about this topic: List Of Broad Gauge (7 Feet) Railway Locomotive Names