| 1201 | Hollimon Oil Corporation | Castroville, TX 78009 | Oil & Gas Operator | Nov 2016 |
| 1202 | Hollingsworth & Assoc | | Oil Operator | Feb 1987 |
| 1203 | Hollis & Kathryn Nichols | Shinglehouse, PA 16748-2112 | Gas Operator | Dec 2015 |
| 1204 | Hollobaugh Paul A | Mayport, PA 16240-1710 | Gas Operator | Dec 2023 |
| 1205 | Holloway David A | Okmulgee, OK 74447-9191 | Oil & Gas Operator | Dec 2023 |
| 1206 | Holloway Oil Company | Austin, TX 78764 | Oil & Gas Operator | Feb 2004 |
| 1207 | Holloway, Donald & Francis | | Oil Operator | Jul 2006 |
| 1208 | Hollrah Exploration Company | Oklahoma City, OK 73172-1174 | Oil & Gas Operator | Jan 2024 |
| 1209 | Hollub Production Company | Seguin, TX 78156 | Oil & Gas Operator | Jul 2000 |
| 1210 | Hollub, Lambert Drilling Company | Seguin, TX 78155 | Oil & Gas Operator | Apr 2024 |
| 1211 | Holly Energy Inc | | Oil Operator | Apr 1983 |
| 1212 | Holly Petroleum, Inc. | Midland, TX 79702 | Oil & Gas Operator | Nov 2008 |
| 1213 | Holmac Oil Company | Hobbs, NM 88240 | Oil & Gas Operator | May 1996 |
| 1214 | Holman Kendall | Paden, OK 74860-7116 | Oil & Gas Operator | Dec 2023 |
| 1215 | Holman Ray | Okemah, OK 74859-0029 | Gas Operator | Dec 2023 |
| 1216 | Holman Robert W | | Oil & Gas Operator | Jan 2019 |
| 1217 | Holmes Exploration, LLC | Tulsa, OK 74136 | Oil & Gas Operator | Jun 2015 |
| 1218 | Holmes Mary Ellen | Bristow, OK 74010 | Oil Operator | Mar 2015 |
| 1219 | Holmes Oil Company Inc | Bristow, OK 74010-0985 | Oil Operator | Apr 2015 |
| 1220 | Holmes Western Oil Corporation | | Oil & Gas Operator | Dec 2023 |
| 1221 | Holson Well Service | Albany, TX 76430 | Oil & Gas Operator | Apr 2024 |
| 1222 | Holston-GR. Sou. Oil & Gas Co. | | Oil & Gas Operator | Mar 1981 |
| 1223 | Holt Andrew L "Mickey" | Pawhuska, OK 74056 | Oil & Gas Operator | Aug 2008 |
| 1224 | Holt IVan | | Oil Operator | Mar 1989 |
| 1225 | Holt IVan Leroy | | Oil & Gas Operator | Jan 1994 |
| 1226 | Holt James | Skiatook, OK 74070-0006 | Oil & Gas Operator | Feb 2020 |
| 1227 | Holt Jean | Claremore, OK 74017-9439 | Oil Operator | Mar 2015 |
| 1228 | Holt Oil & Gas C | | Oil Operator | Sep 1984 |
| 1229 | Holt Oil & Gas Corp | Dallas, TX 75231 | Oil & Gas Operator | Apr 1995 |
| 1230 | Holt Oil And Cattle LLC | Water Valley, TX | Oil & Gas Operator | Apr 2024 |
| 1231 | Holt, Carol | Independence, KS 67301 | Oil Operator | Sep 2023 |
| 1232 | Holtom, Bill, A General Partnership | Saint Paul, KS 66771 | Oil Operator | Dec 2023 |
| 1233 | Holton Brothers | Canton, KS 67428 | Oil Operator | Apr 1990 |
| 1234 | Holwell Drilling Company | | Oil Operator | Sep 1992 |
| 1235 | Hombre Oil Co., LTD. | Tyler, TX 75713 | Oil & Gas Operator | Apr 2021 |
| 1236 | Home Gas & Oil Co Inc | Indiana, PA 15701-1532 | Oil & Gas Operator | Dec 2023 |
| 1237 | Home Petroleum Corp | Victoria, TX 77902 | Oil & Gas Operator | Apr 2024 |
| 1238 | Home-Stake Oil & Gas Company | Plano, TX 75093 | Oil & Gas Operator | Dec 2023 |
| 1239 | Home-Stake Royalty Corp., The | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2014 |
| 1240 | Homeland Energy GP | Campbellsville, KY 42719 | Oil & Gas Operator | Dec 2021 |
| 1241 | Homeland Energy Ventures LLC | Pittsburgh, PA 15241-1633 | Oil & Gas Operator | Dec 2008 |
| 1242 | Homeland Gas & Oil, Inc | Roosevelt, UT 84066-1574 | Oil & Gas Operator | Feb 2024 |
| 1243 | Homeplace Oil And Gas | Caldwell, TX 77836 | Oil & Gas Operator | Feb 2021 |
| 1244 | Homer D. Oliver | | Gas Operator | Sep 1998 |
| 1245 | Homer E. Hines, Inc. | | Oil Operator | Sep 1978 |
| 1246 | Homer Oil Co LLC | Holdenville, OK 74848-0787 | Oil Operator | Dec 2023 |
| 1247 | Homestead Oil Inc | | Oil & Gas Operator | Jan 2018 |
| 1248 | Hon R J Oil & Ga | | Oil Operator | Nov 1990 |
| 1249 | Hondo Drilling Company | Midland, TX 79702 | Oil & Gas Operator | Nov 1996 |
| 1250 | Hondo Oil & Gas | Houston, TX 77042 | Oil & Gas Operator | Oct 1995 |
| 1251 | Hondo Oil & Gas Company | Roswell, NM 88202 | Oil & Gas Operator | Aug 2006 |
| 1252 | Hondo Operating, Inc. | | Oil & Gas Operator | Sep 1997 |
| 1253 | Honeck Oil Company | Austin, TX 78716 | Oil & Gas Operator | Mar 2008 |
| 1254 | Honeck Oil Company, LP | Austin, TX 78716 | Oil & Gas Operator | Dec 2010 |
| 1255 | Honey Oil Co | Wichita, KS 67226 | Oil & Gas Operator | Mar 2009 |
| 1256 | Honey Well, LLC | Lenexa, KS 66219 | Oil Operator | Dec 2023 |
| 1257 | Honeymon Drilling Company LTD | Oklahoma City, OK 73147 | Oil & Gas Operator | Feb 1995 |
| 1258 | Hood, J. F. | Holliday, TX 76366 | Oil & Gas Operator | Apr 2010 |
| 1259 | Hood, J. Frank, Jr. | Arlington, TX 76006 | Oil & Gas Operator | Apr 2024 |
| 1260 | Hood, Joe B. | Wichita Falls, TX 76301 | Oil & Gas Operator | Mar 2008 |
| 1261 | Hooker Phil Oil Operator | | Oil Operator | Aug 1996 |
| 1262 | Hooks Dwain | Tatums, OK 73487-0072 | Oil & Gas Operator | Dec 2023 |
| 1263 | Hooper, DR. Oil & Royalty Co. | Conroe, TX 77304 | Oil & Gas Operator | Sep 1999 |
| 1264 | Hootkins, Seymour G. | Archer City, TX 76351 | Oil & Gas Operator | Apr 1997 |
| 1265 | Hootkins-Smith,La LTD. | | Gas Operator | Jun 1985 |
| 1266 | Hoots Jr, Willard | Martinsville, IN 46151 | Oil Operator | Dec 2022 |
| 1267 | Hoover & Wilson Exp & Prod Inc | Fort Smith, AR 72913-5171 | Gas Operator | Jul 2013 |
| 1268 | Hoover Frank W Dba Cherokee Drilling | Millersburg, OH 44654 | Oil & Gas Operator | Dec 2023 |
| 1269 | Hoover Gregory M | Wattsburg, PA 16442-2209 | Gas Operator | Dec 2023 |
| 1270 | Hoover Noble C | | Oil Operator | Nov 1992 |
| 1271 | Hoover Petroleum Company, LLC | Midland, TX 79701 | Oil Operator | Apr 2024 |
| 1272 | Hoover Producing & Operating | Newark, OH 43055 | Oil & Gas Operator | Dec 2001 |
| 1273 | Hoover, Eugene Z. | Penn Yan, NY 14527 | Gas Operator | Dec 2022 |
| 1274 | Hopco Operating, Inc. | Stafford, TX 77497 | Oil & Gas Operator | Dec 2016 |
| 1275 | Hopco Resources Inc | Columbus, OH 43065 | Oil & Gas Operator | Dec 2023 |
| 1276 | Hope Company, LLC | Longmont, CO 80502 | Gas Operator | Feb 2012 |
| 1277 | Hope Energy, L.L.C. | Snyder, TX 79549 | Oil & Gas Operator | Apr 2024 |
| 1278 | Hope Gas, Inc. | Richmond, VA 23261 | Oil & Gas Operator | Dec 2010 |
| 1279 | Hope Oil Corporation | | Oil Operator | Mar 2024 |
| 1280 | Hope Oil Inc | Midland, TX 79702 | Oil & Gas Operator | Oct 2021 |
| 1281 | Hope Production, Inc. | Edinburg, TX 78540 | Oil & Gas Operator | Jan 2000 |
| 1282 | Hope'S Windows Inc. | Jamestown, NY 14702 | Gas Operator | Dec 2022 |
| 1283 | Hopewell Oil & Gas Development Company | Columbus, OH 43228 | Oil & Gas Operator | Dec 2019 |
| 1284 | Hopewell Operating, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Apr 2024 |
| 1285 | Hopkins Engineering, Inc. | Houston, TX 77046 | Oil & Gas Operator | Sep 1996 |
| 1286 | Hopkins, T. M. Operating Co. | Kilgore, TX 75663 | Oil & Gas Operator | Apr 2024 |
| 1287 | Hoppe Oil & Gas | | Oil Operator | Nov 1992 |
| 1288 | Hoppe Oil & Gas Co., Inc. | Wichita, KS 67202 | Oil Operator | Jul 1998 |
| 1289 | Hopper Oil Co., Inc. | Winfield, KS 67156 | Oil Operator | Nov 2023 |
| 1290 | Hopper Oil Compa | | Oil Operator | Sep 1988 |
| 1291 | Hopper, Harlan | Midland, TX 79702 | Oil & Gas Operator | Apr 2024 |
| 1292 | Hopper, Thornton Co. | Midland, TX 79702 | Oil & Gas Operator | Apr 2024 |
| 1293 | Hoppes Helen E | Depew, OK 74028-3428 | Oil & Gas Operator | Apr 2015 |
| 1294 | Horadam, Henry L. | Victoria, TX 77905 | Oil & Gas Operator | Oct 2008 |
| 1295 | Horansky Burrell Revocable Trust | Wichita Falls, TX 76308 | Oil Operator | Apr 2024 |
| 1296 | Horany, Ray & Ernest | Olney, TX 76374 | Oil & Gas Operator | May 2002 |
| 1297 | Horizon & Barnsdall | Tulsa, OK 74102 | Oil Operator | Feb 2012 |
| 1298 | Horizon Energy | Vergas, MN 56587 | Oil & Gas Operator | Apr 2024 |
| 1299 | Horizon Energy Corporation | Sand Fork, WV 26430 | Oil & Gas Operator | Dec 2021 |
| 1300 | Horizon Expl. & Dev. Co., Inc. | | Oil & Gas Operator | Jun 1995 |