| Country | Pipelines |
| Tajikistan | gas 549 km; oil 38 km (2010) |
| Tanzania | gas 254 km; oil 888 km; refined products 8 km (2010) |
| Thailand | gas 1,889 km; liquid petroleum gas 85 km; refined products 1,099 km (2010) |
| Timor-Leste | void |
| Togo | void |
| Tokelau | void |
| Tonga | void |
| Trinidad and Tobago | gas 671 km; oil 334 km (2010) |
| Tunisia | gas 2,386 km; oil 1,323 km; refined products 453 km (2010) |
| Turkey | gas 10,706 km; oil 3,636 km (2010) |
| Turkmenistan | gas 7,352 km; oil 1,457 km (2010) |
| Turks and Caicos Islands | void |
| Tuvalu | void |
| Uganda | void |
| Ukraine | gas 36,493 km; oil 4,514 km; refined products 4,211 km (2010) |
| United Arab Emirates | condensate 458 km; refined products 212 km; gas 2,352 km; liquid petroleum gas 220 km; oil 1,437 km (2010) |