| National Fuel Gas Supply CP06-417 | National Fuel Gas Supply Corporation | NY | | |
| National Fuel Gas Supply CP07-87 | National Fuel Gas Supply Corporation | | | |
| National Fuel Gas Supply FM 100 Project | National Fuel Gas Supply Corporation | PA | In service 2021 | |
| National Fuel Gas Supply FM100 Project | National Fuel Gas Supply Corporation | PA | Started 2021 | |
| National Fuel Gas Supply Line C46S 2026 Modernization Project | National Fuel Gas Supply Corporation | | | |
| National Fuel Gas Supply Line D Project | National Fuel Gas Supply Corporation | | In service 2017 | |
| National Fuel Gas Supply Line N 2012 Expansion Project | National Fuel Gas Supply Corporation | PA | 2012 | |
| National Fuel Gas Supply Line R34S & R26S Replacement Project | National Fuel Gas Supply Corporation | | | |
| National Fuel Gas Supply Line YM28 and Line FM120 Modernization Project | National Fuel Gas Supply Corporation | PA | In service 2018 | |
| National Fuel Gas Supply Line Z20 Modernization Project | National Fuel Gas Supply Corporation | PA | In service 2023 | |
| National Fuel Gas Supply PF10-14 | National Fuel Gas Supply Corporation | | | |
| National Marine Fisheries Service PF05-9 | National Marine Fisheries Service | | | |
| Natrium to Market Project | Dominion Transmission, Inc. | PA | 2014 | |
| Natural Bridge Pipeline | Black Hills Gas Distribution LLC | WY | 2019 | |
| Natural Gas Pipeline Co. America CP06-240 | Natural Gas Pipeline Co. America | IA | | |
| Natural Gas Pipeline Company Of America (ngpl) coastal use permit P20070358 pipeline | Natural Gas Pipeline Company Of America (ngpl) | LA | | |
| Natural Gas Pipeline Company Of America coastal use permit P20080204 pipeline | Natural Gas Pipeline Company of America LLC | LA | | |
| Natural Gas Pipeline Company Of America coastal use permit P20081260 pipeline | Natural Gas Pipeline Company of America LLC | LA | | |
| Natural Gas Pipeline Company Of America coastal use permit P20081416 pipeline | Natural Gas Pipeline Company of America LLC | LA | | |
| Natural Gas Pipeline Company of America CP04-87 | Natural Gas Pipeline Company of America | OK, TX | | |
| Natural Gas Pipeline Company of America CP06-355 | Natural Gas Pipeline Company of America LLC | IA | | |
| Natural Gas Pipeline Company of America CP06-411 | Natural Gas Pipeline Company of America LLC | TX | | |
| Natural Gas Pipeline Company of America CP08-114 | Natural Gas Pipeline Company of America LLC | LA | | |
| Natural Gas Pipeline Company of America CP08-401 | Natural Gas Pipeline Company of America LLC | | | |
| Natural Gas Pipeline Company of America CP08-402 | Natural Gas Pipeline Company of America LLC | LA | | |
| Natural Gas Pipeline Company of America CP10-223 | Natural Gas Pipeline Company of America LLC | KS | | |
| Natural Gas Pipeline Company of America CP18-15 | Natural Gas Pipeline Company of America LLC | TX | | |
| Natural Gas Pipeline Company of America CP18-16 | Natural Gas Pipeline Company of America LLC | TX | | |
| Natural Gas Pipeline Company of America CP19-470 | Natural Gas Pipeline Company of America LLC | TX | Started 2019 | |
| Natural Gas Pipeline Company of America CP26-154 | Natural Gas Pipeline Company of America LLC | | | |