Tajikistan
total: 482 km
broad gauge: 482 km 1.520-m gauge (2003)
Tanzania
total: 3,690 km
narrow gauge: 969 km 1.067-m gauge; 2,721 km 1.000-m gauge (2003)
Thailand
total: 4,071 km
narrow gauge: 4,071 km 1.000-m gauge (2003)
Togo
total: 568 km
narrow gauge: 568 km 1.000-m gauge (2003)
Tunisia
total: 2,152 km
standard gauge: 468 km 1.435-m gauge
narrow gauge: 1,674 km 1.000-m gauge (65 km electrified)
dual gauge: 10 km 1.435-m and 1.000-m gauges (three rails) (2003)
Turkey
total: 8,671 km
standard gauge: 8,671 km 1.435-m gauge (2,122 km electrified) (2003)
Turkmenistan
total: 2,440 km
broad gauge: 2,440 km 1.520-m gauge (2003)
Uganda
total: 1,241 km
narrow gauge: 1,241 km 1.000-m gauge (2003)
Ukraine
total: 22,473 km
broad gauge: 22,473 km 1.524-m gauge (9,250 km electrified) (2003)
United Kingdom
total: 17,186 km
standard gauge: 16,726 km 1.435-m gauge (5,243 km electrified)
broad gauge: 460 km 1.600-m gauge (in Northern Ireland) (2003)