| Winchester Compressor Station | Compressor station | Woods County, OK | Targa Pipeline Midcontinent Westok LLC | |
| Wind Row Compressor Station | Compressor station | Dewey County, OK | Redcliff Midstream LLC | |
| Winfield | Underground storage | Mecosta County, MI | ANR Pipeline Company | In service |
| Winter Creek Compressor Station | Compressor station | Grady County, OK | ET Gathering & Processing, LLC | |
| Winterfield | Underground storage | Clare County, MI | Consumers Energy Inc | In service |
| Wirth Compressor Station | Compressor station | Pittsburg County, OK | Markwest Oklahoma Gas Company, LLC | |
| Wolcott | Underground storage | Clark County, IN | Indiana Gas Company Dba Vectren | In service |
| Wolf Creek | Underground storage | Pitkin County, CO | Black Hills Energy | In service |
| Wolf Creek Compressor Station | Compressor station | Ellis County, OK | ET Gathering & Processing, LLC | |
| Wolf Lake Terminals | Terminal | IN | Wolf Lake Terminals | |
| Wolgamott Compressor Station | Compressor station | Woods County, OK | Targa Pipeline Midcontinent Westok LLC | |
| Wolverine Pipeline Stockbridge Station terminal | Terminal | MI | Wolverine Pipeline Co | |
| Womack Compressor Station | Compressor station | Coal County, OK | Markwest Oklahoma Gas Company, LLC | |
| Wood 1 22h Compressor | Compressor station | Pittsburg County, OK | Trinity Operating Usg LLC | |
| Wood Duck Compressor Station | Compressor station | Logan County, OK | Great Salt Plains Midstream Gas LLC | |
| Woodall Plant | Gas processing plant | Hemphill County, TX | ETC Field Services LLC | In service |
| Woodhull | Underground storage | Steuben County, NY | Dominion Energy Transmission Co | In service |
| Woods Booster Station | Compressor station | Major County, OK | DCP Operating Company, LP | |
| Woodsboro Plant | Gas processing plant | Refugio County, TX | Southcross Processing LLC | In service |
| Woodward County 1 Compressor Station | Compressor station | Woodward County, OK | DCP Operating Company, LP | |
| Woodward County 2 Compressor Station | Compressor station | Woodward County, OK | DCP Operating Company, LP | |
| Woodward Natural Gas Processing | Gas processing plant | Woodward County, OK | ONEOK Inc., Oneok Field Services Inc | In service |
| Woolaroc Gas Plant | Gas processing plant | Osage County, OK | Osage Hills Pipeline Company, LLC | |
| Worland Gas Plant | Gas processing plant | WY | Kentex Worland, LLC | |
| Worland Plant | Gas processing plant | Washakie County, WY | Devon Energy Production Co. LP | In service |
| Worsham Steed | Underground storage | Jack County, TX | Worsham-Steed Gas Storage, L.p. | In service |
| Worsham-Steed Cryogenic Gas Plant | Gas processing plant | Jack County, TX | Worsham-Steed Gas Storage, L.p. | In service |
| Worthington | Underground storage | Greene County, IN | Citizens Energy Group | In service |
| Wyckoff | Underground storage | Steuben County, NY | Wyckoff Gas Storage Company, LLC | In service |
| YU Bench Gas Plant | Gas processing plant | WY | Cumberland Operating, LLC | |
| Yates Penasco C S | Compressor station | NM | Lucid Artesia Company | |
| Yeager Compressor Station | Compressor station | Hughes County, OK | Enerfin Gathering-East LLC | |
| Yellow Jacket Compressor Station | Compressor station | Stephens County, OK | DCP Operating Company, LP | |
| Yellow Rose Plant | Gas processing plant | Martin County, TX | | |
| Yellowhammer Gas Plant | Gas processing plant | Mobile County, AL | W & T Offshore Inc | In service |
| Yenter Gas Plant | Gas processing plant | Logan County, CO | Sterling Energy Investments, LLC | In service |
| Yggs Compressor Facility Mildred 1 | Compressor station | Canadian County, OK | The Quintin Little Co Inc | |
| Yoakum Gas Processing Plant | Gas processing plant | Lavaca County, TX | Enterprise Products Operating LP | In service |
| Yoakum Natural Gas Processing PL | Gas processing plant | Lavaca County, TX | | |
| Yockey CDP | Compressor station | NM | Hilcorp Energy Company | |
| Young | Underground storage | Morgan County, CO | Colorado Interstate Gas Company, L.L.C. | In service |
| Yu Bench | Gas processing plant | Park County, WY | Cumberland Operating, LLC | In service |
| Yukon Booster Station | Compressor station | Canadian County, OK | DCP Operating Company, LP | |
| Zachry CDP | Compressor station | NM | Hilcorp Energy Company | |
| Zane | Underground storage | Muskingum County, OH | Columbia Gas Transmission, LLC | In service |
| Zaneis Compressor Station | Compressor station | Carter County, OK | DCP Operating Company, LP | |
| Zenith Energy Terminals Holdings Altoona | Terminal | PA | Zenith Energy Terminals Holdings, LLC | |
| Zenith Energy Terminals Holdings Aurora | Terminal | OH | Zenith Energy Terminals Holdings, LLC | |
| Zenith Energy Terminals Holdings Belle Vernon | Terminal | PA | Zenith Energy Terminals Holdings, LLC | |
| Zenith Energy Terminals Holdings Blakely | Terminal | AL | Zenith Energy Terminals Holdings, LLC | |