Oil & Gas Companies in Barber County, KS
| Company Name | Company Location | Company Type | Most Recent Production |
| 1 | L & J Oil Proper | | Oil Operator | Dec 1996 |
| 2 | L B Exploration Inc | Wichita, KS 67205 | Oil & Gas Operator | Jul 2025 |
| 3 | Lachenmayr Oil LLC | Newton, KS 67114 | Oil & Gas Operator | Jun 2025 |
| 4 | Ladd Petroleum C | | Oil & Gas Operator | Sep 1989 |
| 5 | Landowner | Honolulu, HI | Oil & Gas Operator | Dec 2008 |
| 6 | Lario Oil & Gas | | Oil & Gas Operator | Nov 1995 |
| 7 | Lario Oil & Gas Company | Odessa, TX 79762 | Oil & Gas Operator | Oct 2025 |
| 8 | Larson Operating Company | Olmitz, KS 67564-8561 | Oil & Gas Operator | Dec 2019 |
| 9 | Lasso Energy LLC | Chase, KS 67524 | Oil & Gas Operator | Jun 2025 |
| 10 | Leben Oil Corpor | | Oil & Gas Operator | Apr 1991 |
| 11 | Liedtke Operating Corporation | Denver, CO 80202 | Oil & Gas Operator | Dec 2022 |
| 12 | Loeb Herman L | | Oil & Gas Operator | Jan 1996 |
| 13 | Longhorn Energy | | Oil & Gas Operator | Jun 1991 |
| 14 | Lotus Operating Company, L.L.C. | Wichita, KS 67204 | Oil & Gas Operator | Jun 2025 |
| 15 | Lozoya, Jesus Antonio | Coldwater, KS 67029 | Oil & Gas Operator | Jun 2025 |
Production numbers shown above are only for Barber County, KS and for the production period listed.