| Rank | Country | Railways |
| European Union | total: 236,436 km broad gauge: 28,250 km standard gauge: 200,401 km narrow gauge: 7,771 km other: 23 km (2007) |
| Falkland Islands (Islas Malvinas) | void |
| Faroe Islands | void |
111 | Fiji | total: 597 km narrow gauge: 597 km 0.600-m gauge note: belongs to the government-owned Fiji Sugar Corporation; used to haul sugarcane during harvest season (May to December) (2006) |
31 | Finland | total: 5,741 km broad gauge: 5,741 km 1.524-m gauge (2,619 km electrified) (2006) |
9 | France | total: 29,370 km standard gauge: 29,203 km 1.435-m gauge (14,778 km electrified) narrow gauge: 167 km 1.000-m gauge (2006) |
| French Polynesia | void |
| French Southern and Antarctic Lands | void |
99 | Gabon | total: 814 km standard gauge: 814 km 1.435-m gauge (2006) |
| Gambia, The | void |
| Gaza Strip | void |
79 | Georgia | total: 1,612 km broad gauge: 1,575 km 1.520-m gauge (1,575 electrified) narrow gauge: 37 km 0.912-m gauge (37 electrified) (2006) |
5 | Germany | total: 48,215 km standard gauge: 47,962 km 1.435-m gauge (20,278 km electrified) narrow gauge: 229 km 1.000-m gauge (16 km electrified); 24 km 0.750-m gauge (2006) |
89 | Ghana | total: 953 km narrow gauge: 953 km 1.067-m gauge (2006) |
| Gibraltar | void |
65 | Greece | total: 2,571 km standard gauge: 1,565 km 1.435-m gauge (764 km electrified) narrow gauge: 961 km 1.000-m gauge; 22 km 0.750-m gauge dual gauge: 23 km combined 1.435 m and 1.000-m gauges (three rail system) (2006) |
| Greenland | void |
| Grenada | void |
| Guam | void |
94 | Guatemala | total: 886 km narrow gauge: 886 km 0.914-m gauge (2006) |
| Guernsey | void |
98 | Guinea | total: 837 km standard gauge: 175 km 1.435-m gauge narrow gauge: 662 km 1.000-m gauge (2006) |
| Guinea-Bissau | void |
| Guyana | void |
| Haiti | void |
| Heard Island and McDonald Islands | void |
| Holy See (Vatican City) | void |