Oil & Gas Companies in Van Zandt County, TX
| Company Name | Company Location | Company Type | Most Recent Production |
| 1 | Wagner Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Oct 2025 |
| 2 | Wagner, Duer & Co. | Fort Worth, TX 76102 | Oil & Gas Operator | Jan 1999 |
| 3 | Wandoo Energy, LLC | The Woodlands, TX 77382 | Oil & Gas Operator | Oct 2025 |
| 4 | Ward Oil Co. | Kilgore, TX 75663 | Oil & Gas Operator | Oct 2025 |
| 5 | Weathers Exploration, Inc. | Tyler, TX 75702 | Oil & Gas Operator | Oct 2025 |
| 6 | Weeks Exploration Company | Houston, TX 77063 | Oil & Gas Operator | Aug 1995 |
| 7 | Wehunt Oil Company, Inc. | Dallas, TX 75376 | Oil & Gas Operator | Nov 2002 |
| 8 | Westland Oil Development Corp. | Conroe, TX 77305 | Oil & Gas Operator | Mar 2008 |
| 9 | WGR, Inc. | Houston, TX 77046 | Gas Operator | Jul 2007 |
| 10 | Wilson - Owens Production Co. | Longview, TX 75601 | Oil & Gas Operator | Nov 1998 |
| 11 | Wiser Oil Co | Denver, CO 80202 | Oil & Gas Operator | Dec 2023 |
| 12 | Woods Operating Co., Inc. | Shreveport, LA 71136 | Oil & Gas Operator | Dec 2020 |
| 13 | WTXR Operating (Texas), Inc. | Carrollton, TX 75007 | Oil Operator | Oct 2025 |
Production numbers shown above are only for Van Zandt County, TX and for the production period listed.