| Rank | Country | dual gauge | Railways |
| Armenia | | total: 869 km broad gauge: 869 km 1.520-m gauge (818 km electrified) note: some lines are out of service (2010) |
| Aruba | | void |
| Ashmore and Cartier Islands | | void |
| Atlantic Ocean | | void |
| Australia | | total: 38,445 km broad gauge: 3,355 km 1.600-m gauge standard gauge: 21,674 km 1.435-m gauge (650 km electrified) narrow gauge: 9,539 km 1.067-m gauge (2,067 km electrified); 3,877 km 1.000-m gauge (2010) |
| Austria | | total: 6,399 km standard gauge: 5,927 km 1.435-m gauge (3,853 km electrified) narrow gauge: 384 km 1.000-m gauge (15 km electrified); 88 km 0.760-m gauge (10 km electrified) (2010) |
| Azerbaijan | | total: 2,918 km broad gauge: 2,918 km 1.520-m gauge (1,278 km electrified) (2009) |
| Bahamas, The | | void |
| Bahrain | | void |
| Bangladesh | | total: 2,622 km broad gauge: 946 km 1.676-m gauge narrow gauge: 1,676 km 1.000-m gauge (2010) |
| Barbados | | void |
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This page was last updated on 2 February, 2012 |
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