| Rank | Country | Railways |
| Afghanistan | void |
| Akrotiri | void |
96 | Albania | total: 896 km standard gauge: 896 km 1.435-m gauge (2008) |
43 | Algeria | total: 3,973 km standard gauge: 2,888 km 1.435-m gauge (283 km electrified) narrow gauge: 1,085 km 1.055-m gauge (2008) |
| American Samoa | void |
| Andorra | void |
61 | Angola | total: 2,764 km narrow gauge: 2,641 km 1.067-m gauge; 123 km 0.600-m gauge (2008) |
| Anguilla | void |
| Antarctica | void |
| Antigua and Barbuda | void |
| Arctic Ocean | void |
8 | Argentina | total: 31,409 km broad gauge: 27,301 km 1.676-m gauge (94 km electrified) standard gauge: 2,780 km 1.435-m gauge (26 km electrified) narrow gauge: 1,328 km 1.000-m gauge (2008) |
99 | Armenia | total: 845 km broad gauge: 845 km 1.520-m gauge (818 km electrified) note: some lines are out of service (2008) |
| Aruba | void |
| Ashmore and Cartier Islands | void |
| Atlantic Ocean | void |
7 | Australia | total: 37,855 km broad gauge: 142 km 1.600-m gauge standard gauge: 24,409 km 1.435-m gauge (1,094 km electrified) narrow gauge: 13,304 km 1.067-m gauge (1,193 km electrified) (2008) |