| Sterling Plant | Gas processing plant | Sterling County, TX | Targa Resources | In service |
| Stiedley 1 16h Compressor Station | Compressor station | Pittsburg County, OK | Trinity Operating Usg LLC | |
| Stiles CDP Compressor Station | Compressor station | Roger Mills County, OK | Williams Midstream Gas Services LLC | |
| Stillwater Compressor Station | Compressor station | Payne County, OK | Superior Midstream, LLC | |
| Stockman Plant | Gas processing plant | Shelby County, TX | Enable Midstream Partners, LP | In service |
| Stolthaven Houston Houston terminal | Terminal | TX | Stolthaven Houston LLC | |
| Stolthaven New Orleans New Orleans terminal | Terminal | LA | Stolthaven New Orleans LLC | |
| Stolz Booster Station | Compressor station | Kingfisher County, OK | DCP Operating Company, LP | |
| Stone Compressor Facility | Compressor station | Kingfisher County, OK | Tom-Stack | |
| Straight Compressor Station | Compressor station | Texas County, OK | DCP Operating Company, LP | |
| Straight North Compressor Station | Compressor station | Texas County, OK | DCP Operating Company, LP | |
| Strange Compressor Station | Compressor station | Pittsburg County, OK | Petrolink Energy LLC | |
| Stratton Ridge | Underground storage | Brazoria County, TX | The Dow Chemical Company | In service |
| Strong City Compressor Station | Compressor station | Roger Mills County, OK | ET Gathering & Processing, LLC | |
| Strother Compressor Station | Compressor station | Seminole County, OK | Petrolink Energy LLC | |
| Stroud Terminal | Terminal | OK | | |
| Stuart Compressor Station | Compressor station | Hughes County, OK | Enable Oklahoma Intrastate Transmission, LLC | |
| Stuart North Compressor Station | Compressor station | Hughes County, OK | Markwest Oklahoma Gas Company, LLC | |
| Stuart South Compressor Station | Compressor station | Hughes County, OK | Markwest Oklahoma Gas Company, LLC | |
| Stuart Storage Facility | Underground storage | Hughes County, OK | Enable Oklahoma Intrastate Transmiss | In service |
| Sturgis Compressor Station | Compressor station | Cimarron County, OK | Badger Midstream Energy LP | |
| Suburban Propane Elk Grove terminal | Terminal | CA | Suburban Propane Partners LP | |
| Suit-Kote Tonawanda Asphalt terminal | Terminal | NY | Suit-Kote Corp | |
| Sulfuric Acid Plant | Gas processing plant | Tulsa County, OK | Chemtrade Refinery Services Inc | |
| Sulphur Mines Salt Dome LPG Storage | Underground storage | LA | | |
| Sulphur Mines Salt Dome Natural Gas Storage | Underground storage | LA | | |
| Summit Storage | Underground storage | Erie County, PA | National Fuel Gas Supply Corporation | In service |
| Sun Ranch Federal Gas Plant | Gas processing plant | WY | | |
| Suncor Energy USA Fruita Plant terminal | Terminal | CO | Suncor Energy USA | |
| Sundance Plant | Gas processing plant | Martin County, TX | | |
| Sundown Compressor Station | Compressor station | Grady County, OK | DCP Operating Company, LP | |
| Sunnylane Crude Terminal | Terminal | OK | | |
| Sunoco Big Flats terminal | Terminal | NY | Sunoco, LLC | |
| Sunoco Birmingham terminal | Terminal | AL | Sunoco, LLC | |
| Sunoco Caddo LLC terminal | Terminal | TX | Sunoco, LLC | |
| Sunoco Euless terminal | Terminal | TX | Sunoco, LLC | |
| Sunoco Hudson Terminal | Terminal | NY | Sunoco, LLC | |
| Sunoco Logistics Akron terminal | Terminal | OH | Sunoco Logistics | |
| Sunoco Logistics Arcadia terminal | Terminal | LA | Sunoco Logistics | |
| Sunoco Logistics Baltimore terminal | Terminal | MD | Sunoco Logistics | |
| Sunoco Logistics Blawnox terminal | Terminal | PA | Sunoco Logistics | |
| Sunoco Logistics Buffalo terminal | Terminal | NY | Sunoco Logistics | |
| Sunoco Logistics Center terminal | Terminal | TX | Sunoco Logistics | |
| Sunoco Logistics Cleveland terminal | Terminal | OH | Sunoco Logistics | |
| Sunoco Logistics Columbus East terminal | Terminal | OH | Sunoco Logistics | |
| Sunoco Logistics Columbus West terminal | Terminal | OH | Sunoco Logistics | |
| Sunoco Logistics Dayton terminal | Terminal | OH | Sunoco Logistics | |
| Sunoco Logistics Delmont terminal | Terminal | PA | Sunoco Logistics | |
| Sunoco Logistics Eagle Point Tank Farm Eptf terminal | Terminal | NJ | Sunoco Logistics | |
| Sunoco Logistics East Boston terminal | Terminal | MA | Sunoco Logistics | |