N
- Napoleon (Famous personality: Napoleon I of France)
- GWR Victoria class 2-4-0 (1856 - 1880)
- Nelson (Famous people: Horatio Nelson, 1st Viscount Nelson)
- GWR Standard Goods 0-6-0 (1853 - 1873)
- Nemesis (Greek mythology: Nemesis)
- GWR Standard Goods 0-6-0 (1855 - 1877)
- Neptune (Roman mythology: Neptune)
- GWR Charles Tayleur 2-2-2 (1838 - 1840)
- GWR Standard Goods 0-6-0 (1854 - 1881)
- Nero (Roman personality: Nero)
- GWR Standard Goods 0-6-0 (1855 - 1877)
- Newport (Geography: Newport)
- GWR Swindon class 0-6-0 (1866 - 1874)
- Newquay (Geography: Newquay)
- NCJR 2-4-0T (c.1869 - 1874)
- Nimrod (Classical leader: Nimrod)
- GWR Standard Goods 0-6-0 (1854 - 1877)
- Nora Creina (Literary muse:Lesbia hath a beaming eye)
- GWR Caesar class 0-6-0 (1851 - 1872)
- North Star (Astronomy: Pole star)
- GWR Star class 2-2-2 (1837 - 1871)
- North Star replica 2-2-2 (Built 1925)
Read more about this topic: List Of Broad Gauge (7 Feet) Railway Locomotive Names