Mongolia
total: 1,810 km
broad gauge: 1,810 km 1.524-m gauge (2004)
Morocco
total: 1,907 km
standard gauge: 1,907 km 1.435-m gauge (1,003 km electrified) (2004)
Mozambique
total: 3,123 km
narrow gauge: 2,983 km 1.067-m gauge; 140 km 0.762-m gauge (2004)
Namibia
total: 2,382 km
narrow gauge: 2,382 km 1.067-m gauge (2004)
Nepal
total: 59 km
narrow gauge: 59 km 0.762-m gauge (2004)
Netherlands
total: 2,808 km
standard gauge: 2,808 km 1.435-m gauge (2,061 km electrified) (2004)
New Zealand
total: 3,898 km
narrow gauge: 3,898 km 1.067-m gauge (506 km electrified) (2004)
Nicaragua
total: 6 km
narrow gauge: 6 km 1.067-m gauge (2004)
Nigeria
total: 3,557 km
narrow gauge: 3,505 km 1.067-m gauge
standard gauge: 52 km 1.435-m gauge (2004)
Norway
total: 4,077 km
standard gauge: 4,077 km 1.435-m gauge (2,518 km electrified) (2004)