| Hoback Pipeline Energy Project | Lower Valley Energy Coop | WY | In service 2008 | |
| Hobbs Compressor Station | Northern Natural Gas Company | NM | | |
| Holbrook Compressor Station (Cameron Interstate Pipeline Expansion) | Cameron Interstate Pipeline, LLC | LA | | |
| Holbrook Compressor Station Ball Valve Installation | Texas Eastern Transmission, LP | PA | | |
| Holbrook Compressor Units Replacement Project | Texas Eastern Transmission, LP | PA | In service 2024 | |
| Holbrook Expansion Project | Cameron Interstate Pipeline, LLC | LA | | |
| Homer Compressor Station | | NE | In service 2014 | |
| Homer to Flanders Pipeline | Arsenal Midstream, LLC | WV | | |
| Horseheads Compressor Station | | NY | | |
| Horseshoe Lake Lateral (A-334) | | IL | In service 2005 | |
| Hot Spring Lateral Project | Texas Eastern Transmission, LP | AR | In service 2011 | |
| Houston Pipe Line Border Crossing Project | Houston Pipe Line Company LP | TX | In service 2015 | |
| HoustonLink | | TX | In service 2016 | |
| Howard County Expansion Project | Navitas Midstream | TX | | |
| Howard Lateral Expansion | Medallion Pipeline Co. LLC | TX | | |
| Howell Storage Field Well Conversion and Abandonment Project | Southwest Gas Storage Company | | Started 2015 | |
| Howell Storage Field Well Re-Entries and Integrity Project | Southwest Gas Storage Company | MI | Started 2012 | |
| HubLine Project | Algonquin Gas Transmission, LLC | MA | In service 2003 | |
| Hubline/East to West Project | Algonquin Gas Transmission, LLC | CT, NJ | In service 2010 | |
| Hudson West End Lateral Pipeline Replacement Project | Transcontinental Gas Pipe Line Company, LLC | NJ | | |
| Hudson to Fox Pipeline | Eqt XL Midstream Operating LLC | WV | | |
| Hudson to Willett Pipeline | Eqt XL Midstream Operating LLC | WV | | |
| Hugh Brinson Pipeline | Energy Transfer | TX | 2025–2026 | |
| Hugh Brinson Pipeline (formerly Warrior Pipeline) Phase I & II | Energy Transfer | TX | | |
| Hugo Compressor Station Uprate | | MN | | |
| Hungry Valley Lateral | | CA, NV, OR | In service 2000 | |
| Hunt Oil coastal use permit P20000885 pipeline | Hunt Oil Co | LA | | |
| Hunter Creek Lateral | | FL | In service 2018 | |
| Huntingdon Connector Project | Northwest Pipeline LLC | WA | | |
| Huntsman 2009 Expansion Project | Kinder Morgan Interstate Gas Transmission | NE | Started 2009 | |