| Name | Country | Market Cap (US$) |
|---|
| Slavneft Oil & Gas Company | Russia | Public |
| Softrock Minerals Ltd. | Canada | Public |
| Source Petroleum Inc | Canada | Public |
| Southern Fuels Ltd | India | Public |
| Southern Realty Co | United States | Public |
| Spindletop Oil & Gas Company | United States | Public |
| Stallion Group (The) | Canada | Public |
| Standard Energy Corporation | United States | Public |
| Star Energy Corp. | United States | Public |
| Stellar Resources, Ltd. | United States | Public |
| Strategic American Oil Corp | Canada | Public |
| Strategic Oil & Gas Ltd | Canada | Public |
| Struthers Industries, Inc. | United States | Public |
| Sunorca Development Corp. | Canada | Public |
| Sunrise Energy Resources, Inc | United States | Public |
| Sunyoung Properties Co.,Ltd | China | Public |
| Suroco Energy Inc. | Canada | Public |
| Synergy Resources Corporation | United States | Public |
| T.M.T. Resources Inc. | Canada | Public |
| Tajzha Ventures Ltd. | Canada | Public |
| Talon International Energy Ltd. | United States | Public |
| Tamm Oil and Gas Corp | United States | Public |
| Tango Energy Inc. | Canada | Public |
| TBX Resources Inc | United States | Public |
| Tearlach Resources Limited | Canada | Public |
| Tekoil & Gas Corporation | United States | Public |
| Terpel Antioquia S.A. | Colombia | Public |
| Terra Energy & Resource Technologies Inc | United States | Public |
| Terra Nostra Resources Corporation | Canada | Public |
| Testudo Oil & Gas Exploration Ltd | Canada | Public |
| Texalta Petroleum Ltd. | Canada | Public |
| Texas Vanguard Oil Company | United States | Public |
| The Reserve Petroleum Company | United States | Public |
| Thrust Energy Corp. | Canada | Public |
| Thule Drilling ASA | Norway | Public |
| Titas Gas Transmission and Distribution Co Ltd | Bangladesh | Public |
| Torch River Resources Ltd | Canada | Public |
| Tradestar Resources Corporation | United States | Public |
| TransAmerican Energy Inc. | Canada | Public |
| Transglobal Energy Resources AG | Switzerland | Public |
| Transglobal Oil Corp | United States | Public |
| Transredes-Transporte de Hidrocarburos S.A. | Bolivia | Public |
| Trek Resources Inc. | United States | Public |
| Triangle Petroleum Corp. | Canada | Public |
| Tribute Resources Inc. | Canada | Public |
| Trinity Energy Resources Inc | United States | Public |
| Triton Distribution Systems Inc | United States | Public |
| Triumph Oil & Gas Corp. | United States | Public |
| Trivello Energy Corp | Canada | Public |
| Tropical Petroleum Products Plc | Nigeria | Public |
| TX Holdings, Inc | United States | Public |
| Tyumenneftegeophysika | Russia | Public |
| Unigas E&P Inc. | United States | Public |
| Union Ventures and Petroleum Plc | Nigeria | Public |
| United Energy Corporation | United States | Public |
| United States Crude International, Inc. | United States | Public |
| United States Oil & Gas Corp. | United States | Public |
| Uranium Oil and Gas Ltd | Australia | Public |
| Uzma Berhad | Malaysia | Public |
| Valley High Mining Company | United States | Public |
| Vantage Drilling Co | United States | Public |
| Velocity Oil & Gas, Inc. | Canada | Public |
| Vengas, S.A. | Venezuela | Public |
| Venture Seismic Ltd. | Canada | Public |
| Venus Exploration, Inc. | United States | Public |
| Victory Energy Corporation | United States | Public |
| Vintage Energy & Exploration Inc | United States | Public |
| Visa Industries of Arizona Inc | United States | Public |
| VNIPIgazdobycha | Russia | Public |
| Well Renewal Inc | United States | Public |
| Wentworth Energy, Inc. | United States | Public |
| West Canyon Energy Corp. | United States | Public |
| WGI Holdings, Inc. | United States | Public |
| Wichita River Oil Corporation | United States | Public |
| Wilon Resources Inc | United States | Public |
| Worldwide Energies Inc. | United States | Public |
| Worldwide Strategies, Inc. | United States | Public |
| Wright Brothers Energy Inc | United States | Public |
| Xcite Energy Limited | British Virgin Islands | Public |
| Xtreme Oil & Gas Inc | United States | Public |
| Zara Trading Inc | United States | Public |
| Zerah Oil & Gaz Explorations L.P. | Israel | Public |
|
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