| Central New Jersey Expansion Project | Transcontinental Gas Pipe Line Company, LLC | NJ | In service 2005 | |
| Central New York Oil & Gas North and South Expansion Project | Central New York Oil & Gas Company, LLC | NY, PA | In service 2011 | |
| Central New York Oil and Gas North Station | Central New York Oil and Gas Company, LLC | NY | | |
| Central New York Oil and Gas South Station | Central New York Oil and Gas Company, LLC | PA | | |
| Central Virginia Connector Project | Columbia Gas Transmission, LLC | VA | In service 2018 | |
| Century Exploration N.o. coastal use permit P19990548 pipeline | Century Exploration N.o., Inc. | LA | | |
| Century Exploration N.o. coastal use permit P20030882 pipeline | Century Exploration N.o., Inc. | LA | | |
| Century Exploration N.o. coastal use permit P20051231 pipeline | Century Exploration N.o., Inc. | LA | | |
| Century Exploration N.o. coastal use permit P20051232 pipeline | Century Exploration N.o., Inc. | LA | | |
| Century Exploration N.o. coastal use permit P20080333 pipeline | Century Exploration N.o., Inc. | LA | | |
| Century Exploration N.o. coastal use permit P20080515 pipeline | Century Exploration N.o., Inc. | LA | | |
| Century Exploration N.o. coastal use permit P20111033 pipeline | Century Exploration N.o., Inc. | LA | | |
| Century Exploration New Orleans coastal use permit P20141484 pipeline | Century Exploration New Orleans, LLC | LA | | |
| Ceredo Compressor Station (Mountaineer XPress additions) | Columbia Gas Transmission, LLC | WV | | |
| Chalmette Louisiana Liquids, LLC C/o Jacobs Engineering coastal use permit P20160742 pipeline | Chalmette Louisiana Liquids, LLC C/o Jacobs Engineering | LA | | |
| Chap LP Pipeline | Antero Midstream LLC | WV | | |
| Chappell to Taft | | PA | | |
| Charles Compressor Station | | MD | | |
| Checkmark Gas Pipeline | | WV | | |
| Cheniere Creole Trail LNG Interconnect | Transcontinental Gas Pipe Line Company, LLC | LA | | |
| Cheniere Creole Trail Pipeline | Cheniere Creole Trail Pl Co | LA | 2007–2008 | |
| Cheniere Creole Trail Pipeline coastal use permit P20070115 pipeline | Cheniere Creole Trail Pipeline, L.P. | LA | | |
| Cheniere Interconnect Project | Trunkline Gas Company, LLC | LA | Started 2008 | |
| Cheniere Pipeline/Gillis Interconnect Project | Texas Eastern Transmission, LP | LA | | |
| Cheniere Sabine Pass LNG Interconnect | Williams Gas Pipeline | LA | | |
| Cherokee Natural Gas Pipeline Project | XcelEnergy | CO | In service 2014 | |
| Cherry Creek Pipeline-McKenzie & Williams Counties | Oneok Rockies Midstream, LLC | ND | Started 2018 | |
| Cherry Creek Pipeline-McKenzie & Williams Counties (PU-19-175) | Oneok Rockies Midstream, LLC | ND | | |
| Chesapeake LNG Vaporizer Replacement | Columbia Gas Transmission, LLC | VA | | |
| Chevron Chemical coastal use permit P19981349 pipeline | Chevron Chemical CO | LA | | |