| NONational Oilwell Varco | Bakersfield | CA | — | ◇ UNVERIFIED |
| NONational Oilwell Varco | Houston | TX | — | ◇ UNVERIFIED |
| NONational Oilwell Varco | Houston | TX | — | ◇ UNVERIFIED |
| NONational Oilwell Varco | Gonzales | TX | — | ◇ UNVERIFIED |
| NONational Oilwell Varco Distribution Services | Casper | WY | — | ◇ UNVERIFIED |
| NONational Oilwell Varco, L.p. | Dayton | TX | — | ◇ UNVERIFIED |
| NONational Oilwell Varco LP - Mobile Rigs / National Oilwell | Lindsay | OK | — | ◇ UNVERIFIED |
| NONational Oilwell Varco LP / Nov Oklahoma City Rig Offshore | Oklahoma City | OK | — | ◇ UNVERIFIED |
| NONational Oilwell Varco LP - Rs Venture Houma | Houma | LA | — | ◇ UNVERIFIED |
| NANew Age Graphics | Irvine | CA | — | ◇ UNVERIFIED |
| NRNg Resources Corportation | Midland | TX | — | ◇ UNVERIFIED |
| NFNhr Facility | Houston | TX | — | ◇ UNVERIFIED |
| NBNoble Blackhawk | Houston | TX | — | ◇ UNVERIFIED |
| NPNorris Production Solutions | Shafter | CA | — | ◇ UNVERIFIED |
| NNov | Orange | CA | — | ◇ UNVERIFIED |
| NFNov Fgs L.p. Mineral Wells | Mineral Wells | TX | — | ◇ UNVERIFIED |
| NMNov Mission Products Oregon Street | Odessa | TX | — | ◇ UNVERIFIED |
| NRNov Rig Solutions Brittmoore Repair Center | Houston | TX | — | ◇ UNVERIFIED |
| NRNov Rig Systems Sam Houston Parkway | Houston | TX | — | ◇ UNVERIFIED |
| NWNov Wilco | Marlow | OK | — | ◇ UNVERIFIED |
| NWNov Wise Breen Drive | Houston | TX | — | ◇ UNVERIFIED |
| OIOderco INC. | Liberty | TX | — | ◇ UNVERIFIED |
| OBOdessa Brandt | Odessa | TX | — | ◇ UNVERIFIED |
| OPOdessa Pumps & Equipment INC. | Asherton | TX | — | ◇ UNVERIFIED |
| OOODIN Oilfield Solutions | Cypress | TX | — | ◇ UNVERIFIED |
| OMO&g Manufacturing LLC | Skiatook | OK | — | ◇ UNVERIFIED |
| ODOilfield Die Manufacturing Co | Lafayette | LA | — | ◇ UNVERIFIED |
| OEOilfield Equipment & Manufacturing, INC. | Shawnee | OK | — | ◇ UNVERIFIED |
| OSOil States Energy Services | Tyler | TX | — | ◇ UNVERIFIED |
| OSOil States Industries | Arlington | TX | — | ◇ UNVERIFIED |
| OOOmron Oilfield & Marine Services | Houston | TX | — | ◇ UNVERIFIED |
| OCOta Compression LLC | Granbury | TX | — | ◇ UNVERIFIED |
| OPO-tex Pumping, L.l.c. | Duncan | OK | — | ◇ UNVERIFIED |
| OOtis | Orange | CA | — | ◇ UNVERIFIED |
| OLOwh LLC | Los Angeles | CA | — | ◇ UNVERIFIED |
| PPPackers Plus Energy Services (usa) INC | Charleston | WV | — | ◇ UNVERIFIED |
| PIPacseal INC | Brea | CA | — | ◇ UNVERIFIED |
| PEPathfinder Energy Services | Katy | TX | — | ◇ UNVERIFIED |
| PIPax INC | Harrisburg | PA | — | ◇ UNVERIFIED |
| PPPeer Properties 2, LLC | San Dimas | CA | — | ◇ UNVERIFIED |
| PLPentucket Lake Condominiums | Haverhill | MA | — | ◇ UNVERIFIED |
| PIPetrospect INC | Houston | TX | — | ◇ UNVERIFIED |
| PUPigs Unlimited International INC. | Tomball | TX | — | ◇ UNVERIFIED |
| PLPipe Line Unique Services LLC | Huffman | TX | — | ◇ UNVERIFIED |
| PMPivotal Mfg, LLC | Broussard | LA | — | ◇ UNVERIFIED |
| PRPizano Real Estate Holdings, LLC | Magnolia | TX | — | ◇ UNVERIFIED |
 Power Dynamics Innovations, LLC. | Stennis Space Center | MS | — | ◇ UNVERIFIED |
| PEPrecision Energy Services | Benbrook | TX | — | ◇ UNVERIFIED |
| PFPremier Framing, INC | Corona | CA | — | ◇ UNVERIFIED |
| POPride of the Hills of Killbuck, INC | Killbuck | OH | — | ◇ UNVERIFIED |
