| Country | Pipelines |
| Saint Lucia | void |
| Saint Martin | void |
| Saint Pierre and Miquelon | void |
| Saint Vincent and the Grenadines | void |
| Samoa | void |
| San Marino | void |
| Sao Tome and Principe | void |
| Saudi Arabia | condensate 212 km; gas 1,880 km; liquid petroleum gas 1,183 km; oil 4,521 km; refined products 1,148 km (2007) |
| Senegal | gas 43 km (2007) |
| Serbia | gas 1,921 km; oil 393 km (2007) |
| Seychelles | void |
| Sierra Leone | void |
| Singapore | gas 139 km; refined products 8 km (2007) |
| Slovakia | gas 6,769 km; oil 416 km (2007) |
| Slovenia | gas 840 km; oil 11 km (2007) |
| Solomon Islands | void |
| Somalia | void |
| South Africa | condensate 100 km; gas 1,177 km; oil 992 km; refined products 1,379 km (2007) |
| South Georgia and the South Sandwich Islands | void |
| Southern Ocean | void |
| Spain | gas 7,858 km; oil 622 km; refined products 3,445 km (2007) |
| Spratly Islands | void |
| Sri Lanka | void |
| Sudan | gas 156 km; oil 4,070 km; refined products 1,613 km (2007) |
| Suriname | oil 50 km (2007) |
| Svalbard | void |
| Swaziland | void |
| Sweden | gas 798 km (2007) |
| Switzerland | gas 1,781 km; oil 94 km; refined products 7 km (2007) |
| Syria | gas 2,794 km; oil 2,000 km (2007) |
| Taiwan | condensate 25 km; gas 661 km (2007) |
| Tajikistan | gas 549 km; oil 38 km (2007) |
| Tanzania | gas 287 km; oil 891 km (2007) |
| Thailand | gas 4,381 km; refined products 320 km (2007) |