| 501 | Inland Oil Corporation | Sapulpa, OK 74067-0943 | Oil & Gas Operator | Jan 2024 |
| 502 | Intergy Production LLC | Edmond, OK 73083-0342 | Oil & Gas Operator | Feb 2024 |
| 503 | International Energy Company LLC | | Oil & Gas Operator | Jan 2024 |
| 504 | International Energy Corporation | Tulsa, OK 74136-3922 | Oil & Gas Operator | Dec 2018 |
| 505 | Interstate Operating LLC | Tulsa, OK 74101-0535 | Oil & Gas Operator | Aug 2013 |
| 506 | Iron Post Oil & Gas Co Inc | Bristow, OK 74010-4120 | Oil & Gas Operator | Feb 2024 |
| 507 | J & F Oil & Gas Company | Yale, OK 74085-0311 | Oil & Gas Operator | Feb 2004 |
| 508 | J & J Jackson Oil & Gas Inc | Centerview, MO 64019 | Oil Operator | Feb 2024 |
| 509 | J & J Production Company LLC | Okemah, OK 74859-0561 | Oil & Gas Operator | Feb 2024 |
| 510 | J & M Oil Co | Overland PK, KS 66209 | Oil & Gas Operator | Dec 2023 |
| 511 | J & M Well Service & Trucking Inc | Bristow, OK 74010-2399 | Oil & Gas Operator | Jan 2024 |
| 512 | J & T Operating Inc | Norman, OK 73070-1736 | Oil & Gas Operator | Feb 2012 |
| 513 | J & T Resources Inc | Oologah, OK 74053-0249 | Oil Operator | Aug 2013 |
| 514 | J A Marrs Oil Company Inc | Drumright, OK 74030-1157 | Oil & Gas Operator | Jan 2024 |
| 515 | J D Operating Company | Tulsa, OK 74105 | Oil & Gas Operator | Jun 2005 |
| 516 | J I Staley Co LLC | | Oil & Gas Operator | Jan 2024 |
| 517 | J T Oil & Gas LLC | Sapulpa, OK 74066-9718 | Oil Operator | Jan 2023 |
| 518 | J.D. Pittman Operating LLC | Edmond, OK 73025 | Oil & Gas Operator | Feb 2024 |
| 519 | J.R. Oil Company | Houston, TX 77007 | Oil & Gas Operator | Jul 2019 |
| 520 | J/A Productions LLC | | Oil Operator | Jan 2024 |
| 521 | Jac-Mac Energy Corporation | Oklahoma City, OK 73170 | Oil & Gas Operator | Feb 2024 |
| 522 | Jackson L B Production Co | Tulsa, OK 74193-0001 | Oil & Gas Operator | Aug 2013 |
| 523 | Jacobs Jean | Hurdle Mills, NC 27541 | Oil & Gas Operator | May 2013 |
| 524 | James Johnny | | Oil & Gas Operator | Jan 2024 |
| 525 | James Raymond L | Sapulpa, OK 74066-8785 | Oil & Gas Operator | Jan 2024 |
| 526 | Jason Petroleum Corporation | Tulsa, OK 74170-0622 | Oil & Gas Operator | Dec 1998 |
| 527 | Jasper Oil LLC | | Oil & Gas Operator | Jan 2024 |
| 528 | Jay Development Corp. | Dallas, TX 75420 | Oil & Gas Operator | Jun 1992 |
| 529 | Jay Energy Corporation | Dallas, TX 75240 | Oil & Gas Operator | Jan 2007 |
| 530 | JCN Petroleum Corporation | Edmond, OK 73083-3357 | Oil & Gas Operator | Jun 2004 |
| 531 | Jeanie Oil Inc | Drumright, OK 74023 | Oil & Gas Operator | Feb 1999 |
| 532 | Jec Operating LLC | Oklahoma City, OK 73114-2717 | Oil & Gas Operator | Jan 2024 |
| 533 | Jenkins Walter D | Oklahoma City, OK 73156-1022 | Oil & Gas Operator | Mar 2011 |
| 534 | Jericho Exploration | Weleetka, OK 74880-0704 | Oil & Gas Operator | Jan 2024 |
| 535 | Jewell Consulting Inc | Bixby, OK 74008 | Oil & Gas Operator | Dec 2022 |
| 536 | Jimgas Inc | Magnolia, TX 77355 | Oil & Gas Operator | May 2016 |
| 537 | JMC Exploration Inc | Dallas, TX 75225-5803 | Gas Operator | Jan 2007 |
| 538 | Johnson Exploration Company | Oklahoma City, OK 73102-7008 | Oil & Gas Operator | Jun 2015 |
| 539 | Johnson Exploration Inc | Sapulpa, OK 74067-0289 | Oil & Gas Operator | Feb 2002 |
| 540 | Joie Oil & Gas Inc | Sapulpa, OK 74067 | Oil & Gas Operator | Dec 1998 |
| 541 | Jones Oil Company | Ardmore, OK 73402-1389 | Oil & Gas Operator | Aug 2022 |
| 542 | Jones Raymond H Family Trust | Drumright, OK 74030-1204 | Oil & Gas Operator | Mar 2023 |
| 543 | Jones Tank Trucks Inc | Cushing, OK 74023-8947 | Oil & Gas Operator | Dec 2000 |
| 544 | Jones, L. E. Production Co. | Duncan, OK 73534 | Oil & Gas Operator | Jul 2014 |
| 545 | Jovian Petroleum Corporation | Houston, TX 77024 | Oil & Gas Operator | Jan 2016 |
| 546 | JSD Resources Corporation | Barnsdall, OK 74002-3272 | Oil & Gas Operator | Jan 2024 |
| 547 | Juno Operating Company II LLC | Plano, TX 75093 | Oil & Gas Operator | Sep 2018 |
| 548 | Jva Operating Company | Midland, TX 79710 | Oil & Gas Operator | Oct 2021 |
| 549 | K & L Operating LLC | | Oil & Gas Operator | Jan 2024 |
| 550 | K-C Oil Co. | Luling, TX 78648 | Oil & Gas Operator | Jan 2013 |
| 551 | Kahn George Operating Co | Seminole, OK 74818 | Oil & Gas Operator | Nov 2000 |
| 552 | Kaiser Investments | Sand Springs, OK 74063 | Oil & Gas Operator | Sep 2003 |
| 553 | Kana Resources, Inc. | Dallas, TX 75243 | Oil & Gas Operator | Aug 2003 |
| 554 | Kanokla Oil & Gas Corporation | Wellington, KS 67152-0444 | Oil & Gas Operator | Jan 2024 |
| 555 | Kantor Oil Company, LLC | Tulsa, OK 74136 | Oil & Gas Operator | Jan 2024 |
| 556 | Kato Operating Company | Bristow, OK 74010 | Oil & Gas Operator | Mar 2015 |
| 557 | Katrina Energy LLC | Covington, LA 70433 | Oil Operator | Dec 2019 |
| 558 | Katy Drilling Corporation | Tulsa, OK 74146-3717 | Oil & Gas Operator | Apr 2020 |
| 559 | Kay Production Company Inc | Bowlegs, OK 74830-0115 | Oil & Gas Operator | Jan 2024 |
| 560 | Keener Oil & Gas Company | Tulsa, OK 74119-4416 | Oil & Gas Operator | Feb 2024 |
| 561 | Keener Oil Company | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2018 |
| 562 | Kellogg Oil Company | Henryetta, OK 74437-1425 | Oil & Gas Operator | Jan 2024 |
| 563 | Kelmar Oil Company | Chickasha, OK 73023-1434 | Oil & Gas Operator | Jan 2024 |
| 564 | Kemmerer Company Inc | Tulsa, OK 74136-7027 | Oil & Gas Operator | Jan 2024 |
| 565 | Kenworthy Operating Company | Tulsa, OK 74132 | Oil & Gas Operator | May 2009 |
| 566 | Kerr-McGee Corporation | Dallas, TX 75380 | Oil & Gas Operator | Sep 2023 |
| 567 | Kerr-McGee Refining Corp | Oklahoma City, OK 73125 | Oil & Gas Operator | Jun 2007 |
| 568 | Keystone Gas Corporation | Drumright, OK 7403O | Oil & Gas Operator | Apr 2015 |
| 569 | Keystone Oil And Gas Company LLC | | Oil & Gas Operator | Jan 2024 |
| 570 | Kidd Bill R | Bristow, OK 74010-9721 | Oil Operator | Jan 2013 |
| 571 | Kiefer Oil And Gas Co Inc | Sapulpa, OK 74066 | Oil & Gas Operator | Apr 2011 |
| 572 | Kiska Oil Company | Tulsa, OK 74114 | Oil & Gas Operator | Jan 2019 |
| 573 | Klo LLC | Tulsa, OK 74120-2428 | Oil & Gas Operator | Feb 2024 |
| 574 | Knife Oil Company Inc | Cushing, OK 74023-1347 | Oil & Gas Operator | Aug 2000 |
| 575 | Koby Oil Company LLC | Oklahoma City, OK 73101-1945 | Oil & Gas Operator | Jan 2024 |
| 576 | Koch Oil Company | | Oil & Gas Operator | May 2017 |
| 577 | Kodiak Oil & Gas Inc | Muenster, TX 76252 | Oil & Gas Operator | Apr 2024 |
| 578 | Kopco, Inc. | Caney, KS 67333 | Oil & Gas Operator | Jan 2024 |
| 579 | Kraker Petroleum Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Jan 1995 |
| 580 | Krotzer Oil Company | Cleveland, OK 74020-0383 | Oil & Gas Operator | Feb 2024 |
| 581 | Krumme Oil Company LLP | Bristow, OK 74010-0749 | Oil & Gas Operator | Jan 2024 |
| 582 | KWB Oil Property Management Inc | Tulsa, OK 74103 | Oil & Gas Operator | Jan 2024 |
| 583 | Kybenco Disposals LLC | | Oil Operator | Sep 2022 |
| 584 | Labo Oil Company Inc | Drumright, OK 74030-5619 | Oil & Gas Operator | Jan 2024 |
| 585 | Lackey Danny | Kiefer, OK 74041-0702 | Oil & Gas Operator | Oct 2022 |
| 586 | Lackey WM Oil & Gas Oper Co | Shawnee, OK 74801 | Oil & Gas Operator | Jan 1994 |
| 587 | Lahoma Production Inc | Jenks, OK 74037-0487 | Oil & Gas Operator | Nov 2023 |
| 588 | Lake Country Disposal II LLC | | Oil Operator | Jan 2024 |
| 589 | Lake Country Disposal LLC | | Oil Operator | Jan 2024 |
| 590 | Lakeland Pipeline Inc | Hominy, OK 74035-1006 | Oil & Gas Operator | Jun 2023 |
| 591 | Lakeshore Operating, LLC | Wichita, KS 67203 | Oil & Gas Operator | Apr 2024 |
| 592 | Lamamco Drilling Company | Skiatook, OK 74070 | Oil & Gas Operator | Jan 2024 |
| 593 | Lambdin William H | Oklahoma City, OK 73120 | Oil & Gas Operator | Nov 1998 |
| 594 | Lamberton Oil Co Inc | Tulsa, OK 74107 | Oil & Gas Operator | May 2013 |
| 595 | Lamberton W J | Tulsa, OK 74119 | Oil & Gas Operator | Apr 2015 |
| 596 | Landers & Waldman Inc | Okemah, OK 74859-0660 | Oil & Gas Operator | May 2013 |
| 597 | Landmark Operating Company | Welty, OK 74833-3923 | Oil Operator | Aug 2015 |
| 598 | Lansden Operating Co LLC | Norman, OK 73070 | Oil & Gas Operator | Dec 1997 |
| 599 | Lapetco Inc | Plano, TX 75093 | Oil & Gas Operator | Feb 2024 |
| 600 | Lar-Mie Petroleum Inc | Tulsa, OK 74136 | Oil & Gas Operator | Aug 1998 |