| Rank | Country | broad gauge | Railways |
| Netherlands | | total: 2,797 km standard gauge: 2,797 km 1.435-m gauge (2,064 km electrified) (2006) |
| Netherlands Antilles | | void |
| New Caledonia | | void |
| New Zealand | | total: 4,128 km narrow gauge: 4,128 km 1.067-m gauge (506 km electrified) (2006) |
| Nicaragua | | total: 6 km narrow gauge: 6 km 1.067-m gauge (2006) |
| Niger | | void |
| Nigeria | | total: 3,505 km narrow gauge: 3,505 km 1.067-m gauge (2006) |
| Niue | | void |
| Norfolk Island | | void |
| Northern Mariana Islands | | void |
| Norway | | total: 4,114 km standard gauge: 4,114 km 1.435-m gauge (2,552 km electrified) (2008) |
| Oman | | void |
| Pacific Ocean | | void |
| Palau | | void |
| Panama | | total: 355 km standard gauge: 77 km 1.435-m gauge narrow gauge: 278 km 0.914-m gauge (2006) |
| Papua New Guinea | | void |
| Paracel Islands | | void |
| Paraguay | | total: 36 km standard gauge: 36 km 1.435-m gauge (2006) |
| Peru | | total: 1,989 km standard gauge: 1,726 km 1.435-m gauge narrow gauge: 263 km 0.914-m gauge (2006) |
| Philippines | | total: 897 km narrow gauge: 897 km 1.067-m gauge (492 km are in operation) (2006) |
| Pitcairn Islands | | void |
| Puerto Rico | | total: 96 km narrow gauge: 96 km 1.000-m gauge (2006) |
| Qatar | | void |
| Rwanda | | void |
| Saint Barthelemy | | void |
| Saint Helena | | void |
| Saint Kitts and Nevis | | total: 50 km narrow gauge: 50 km 0.762-m gauge on Saint Kitts for tourists (2006) |
| Saint Lucia | | void |
| Saint Martin | | void |
| Saint Pierre and Miquelon | | void |
| Saint Vincent and the Grenadines | | void |