Oil & Gas Companies in Parker County, TX
| Company Name | Company Location | Company Type | Most Recent Production |
| 501 | Winchester Oil & Gas LLC | Rockdale, TX 76567 | Oil Operator | Dec 2025 |
| 502 | Winfield Operating Company | Dallas, TX 75214 | Oil & Gas Operator | Dec 2025 |
| 503 | Wise Exploration | Perrin, TX 76486 | Oil & Gas Operator | Dec 2025 |
| 504 | Wise Production Company | Bowie, TX 76230 | Oil & Gas Operator | Dec 2025 |
| 505 | Wise Well Service | Bowie, TX 76230 | Oil & Gas Operator | Jul 2017 |
| 506 | World Producers, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Nov 1994 |
| 507 | WPX Energy Gulf Coast, LP | Benbrook, TX 76126 | Oil & Gas Operator | May 2012 |
| 508 | Wy Woodland Operating, LLC | Covington, TX 76636 | Oil & Gas Operator | Dec 2025 |
| 509 | Xplore Operating, LLC | Arlington, TX 76001 | Oil & Gas Operator | Dec 2025 |
| 510 | XTO Energy Inc. | Spring, TX 77389 | Oil & Gas Operator | Dec 2025 |
| 511 | Young Marshall R Oil Co | Fort Worth, TX 76107 | Oil & Gas Operator | Mar 2011 |
| 512 | Young Resources, Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | Aug 1999 |
| 513 | Young, L. M. | Brownwood, TX 76804 | Oil & Gas Operator | Aug 2003 |
| 514 | Zachry Oil And Gas Properties | Midland, TX 79708 | Oil & Gas Operator | Dec 2025 |
Production numbers shown above are only for Parker County, TX and for the production period listed.