| Garden State Expansion Project | Transcontinental Gas Pipe Line Company, LLC | NJ | 2017–2018 | |
| Gardendal to Three Rivers | | | | |
| Garner LNG Offloading and Utilization Project | Northern Natural Gas Company | IA | In service 2014 | |
| Garner LNG Refrigeration Compressor Replacement | Northern Natural Gas Company | IA | | |
| Gas Processing Plants - Williams County | Oneok Rockies Midstream, LLC | ND | | |
| Gas Transmission Northwest A-Line Hydrotest Project | Gas Transmission Northwest LLC | ID | Started 2022 | |
| Gas Transmission Northwest CP20-82 | Gas Transmission Northwest LLC | ID | | |
| Gas Transmission Northwest CP20-85 | Gas Transmission Northwest LLC | OR | | |
| Gas Transmission Northwest CP20-86 | Gas Transmission Northwest LLC | WA | | |
| Gateway Expansion Project | Transcontinental Gas Pipe Line Company, LLC | NJ | 2019 | |
| Gateway Extension Project | Eastern Gas Transmission and Storage, Inc. | WV | In service 2025 | |
| Gateway Extension Project | Eastern Gas Transmission and Storage, Inc. | | In service 2025 | |
| Gateway Project | Sendero Carlsbad Gateway, LLC | NM, TX | 2019–2020 | |
| Gathering 70308 ROW Maintenance TL-404 | Blue Racer Midstream, LLC | WV | | |
| Gator Express Pipeline | Venture Global | LA | In service 2024 | |
| Gator Express Pipeline (Phase 1) | Venture Global Gator Express, LLC | LA | In service 2024 | |
| Gator Express Pipeline (Phase 2) | Venture Global Gator Express, LLC | LA | In service 2024 | |
| Gator Express Pipeline Project | Venture Global Plaquemines LNG, LLC | LA | In service 2024 | |
| Gator Express Uprate Project | Venture Global Gator Express, LLC | LA | | |
| Gcer Onshore coastal use permit P20140070 pipeline | Gcer Onshore, LLC | LA | | |
| Gee Pipeline and Stanley Spur | Shell | PA | | |
| Generation Pipeline OPSB case 17-2194-GA-BLN | Generation Pipeline, LLC | OH | | |
| Generation Pipeline OPSB case 18-1601-GA-BLN | Generation Pipeline, LLC | OH | | |
| Genesis Pipeline Usa coastal use permit P20131646 pipeline | Genesis Pipeline Usa, L.p. | LA | | |
| Genesis Pipeline Usa coastal use permit P20141493 pipeline | Genesis Pipeline Usa, L.p. | LA | | |
| Genesis Pipeline Usa coastal use permit P20160272 pipeline | Genesis Pipeline Usa, L.p. | LA | | |
| Genesis Pipeline Usa coastal use permit P20190054 pipeline | Genesis Pipeline Usa, L.p. | LA | | |
| Genevieve LP Pipeline | | WV | | |
| Geonet Oil Terminaling & Transportation coastal use permit P20011769 pipeline | Geonet Oil Terminaling & Transportation | LA | | |
| Georgia Access Project | Transcontinental Gas Pipe Line Company, LLC | | | |