| Rendezvous Gas Pipeline Co, LLC | Owner/operator | | | |
| Rendezvous Gas Services, L.L.C. | Owner/operator | | 2 | |
| Rendezvous Pipeline Company, LLC | Owner/operator | | | |
| Renewable Energy Of Jefferson LLC | Owner/operator | Avondale, LA | | |
| Renewco-Meadow Branch, LLC | Owner/operator | : Wake Forest, NC | | |
| Renovar Energy Corp | Owner/operator | | | |
| Renovar Shreveport Llc. | Owner/operator | | | |
| Reo Operating LLC | Owner/operator | Austin, TX | | 2 |
| Rep Kansas Gathering, LLC | Owner/operator | Independence, KS | | 1 |
| Rep Processing | Owner/operator | Tulsa, OK | | 3 |
| Repsol Oil & Gas Usa, LLC | Owner/operator | The Woodlands, TX | | 15 |
| Republic Coast Pipeline LLC | Owner/operator | Houston, TX | | 10 |
| Republic Midstream, LLC | Owner/operator | Houston, TX | | 1 |
| Republic Services Of Wisconsin, Limited Partnership | Owner/operator | Racine, WI | | |
| Resc, LLC | Owner/operator | | | |
| Resolute Natural Resources Company | Owner/operator | Denver, CO | | |
| Resource Environmental Solutions | Contractor | | 1 | |
| Rextac, LLC | Owner/operator | Odessa, TX | | 3 |
| Ribost Terminal Llc, Dba World Oil Terminals | Owner/operator | South Gate, CA | | 1 |
| Ribost Terminal, LLC | Owner/operator | | | 1 |
| Rice Drilling B LLC | Owner/operator | | | |
| Rice Energy | Owner/operator | | 4 | |
| Rice Olympus Midstream LLC | Owner/operator | Canonsburg, PA | | 1 |
| Rice Poseidon Midstream LLC | Owner/operator | Canonsburg, PA | | 1 |
| Richardson Fuels Inc | Owner/operator | Fort Worth, TX | | 1 |
| Richardson, Sid Carbon & Gas Co | Owner/operator | | | |
| Richland Stryker Generation, LLC | Owner/operator | Defiance, OH | | 1 |
| Ridge Oil And Gas LLC | Owner/operator | Addison, TX | | 1 |
| Ridge Runner Pipeline Commissioning Specialists, LLC | Contractor | Morgantown, WV | | |
| Ridgelake Energy IN | Owner/operator | | 1 | |
| Ridgemar Energy Operating, LLC | Owner/operator | Houston, TX | | 1 |
| Right-Of-Way Clearing & Maintenance, Inc. | Contractor | Greensburg, PA | 38 | |
| Rimrock Midstream | Owner/operator | Dallas, TX | | 1 |
| Ringwood Gathering Co | Owner/operator | Spring, TX | | 1 |
| Rio Bravo Pipeline Company | Owner/operator | | 1 | |
| Rio Grande E&p Ii, LLC | Owner/operator | | | 3 |
| Rio Grande Ep II LLC | Owner/operator | Houston, TX | | 1 |
| Rio Grande LNG Train 6, LLC | Owner/operator | | 1 | |
| Rio Grande LNG, LLC | Owner/operator | | 5 | |
| Rio Grande LNG, LLC,Rio Grande LNG Train 4, LLC,Rio Grande LNG Train 5, LLC | Owner/operator | | 1 | |
| Rio Oil & Gas (permian) Ii, LLC | Owner/operator | The Woodlands, TX | | 1 |
| Rio Tinto Borates | Owner/operator | Boron, CA | | 1 |
| Ritter Construction Company | Contractor | | 1 | |
| River Rock Operating, LLC | Owner/operator | Chanute, KS | | 1 |
| Riverbirch Resources, LLC | Owner/operator | | | 1 |
| Riverfront Exploration, LLC | Owner/operator | Fort Smith, AR | | 1 |
| Riverside Energy Michigan, LLC | Owner/operator | Traverse City, MI | | 1 |
| Riverside Generating Company, LLC | Owner/operator | Catlettsburg, KY | | 1 |
| Riverside Petroleum Indiana | Owner/operator | Washington, IN | | 1 |
| Riverwest Appalachia Midstream LLC | Owner/operator | Westminster, CO | | 1 |