| Name | Country | Market Cap (US$) |
|---|
| Century Energy Ltd. | Canada | Public |
| CEPSA S.A. | Ecuador | Public |
| Champion American Energy Reserves, Inc. | United States | Public |
| Champlain Resources Inc. | Canada | Public |
| Chancellor Group, Inc | United States | Public |
| Cheetah Oil & Gas Ltd | Canada | Public |
| Chernogorneft | Russia | Public |
| China New Energy Group Company | United States | Public |
| China Oil & Methanol Group, Inc. | Canada | Public |
| Churchill Energy Inc | Canada | Public |
| Cicada Ventures Ltd | Canada | Public |
| Citurgia Biochemicals Limited | India | Public |
| Clearview Acquisitions, Inc. | United States | Public |
| Coastal Pacific Mining Corp | Canada | Public |
| Cobra Energy, Inc. | United States | Public |
| Cobra Oil & Gas Co. | United States | Public |
| Cohen Development and Industrial Buildings Ltd. | Israel | Public |
| Colonia Energy Corp | Canada | Public |
| Colorado Wyoming Reserve Co. | United States | Public |
| Columbian Northland Exploration Ltd | Canada | Public |
| Companhia Petrolifera Marlim | Brazil | Public |
| Consolidated Biofuels Inc. | United States | Public |
| Consolidated Oil & Gas Inc | United States | Public |
| Continental Resources, Inc. | United States | Public |
| Copper Creek Ventures Ltd. | Canada | Public |
| Coral Sea Resources Inc. | Canada | Public |
| Cosco ESP, Inc. | Canada | Public |
| Costa Energy Inc | Canada | Public |
| County Line Energy Corp | Canada | Public |
| Croff Enterprises Inc | United States | Public |
| Cromwell Resources Limited | Canada | Public |
| Crown Oil & Gas Inc. | United States | Public |
| Crown Point Ventures Ltd. | Canada | Public |
| Cygnus Oil and Gas Corporation | United States | Public |
| Cyntech Technologies, Inc. | United States | Public |
| Czech Republic Resource Corp. | United States | Public |
| Dalmac Energy Inc. | Canada | Public |
| Daulton Capital Corp | Canada | Public |
| Daybreak Oil & Gas, Inc. | United States | Public |
| Deep Industries Limited | India | Public |
| Deep Rock Oil & Gas Inc | United States | Public |
| Delek Resources, Inc. | United States | Public |
| Delta Oil & Gas, Inc. | United States | Public |
| Denby Investment (UK) plc | United Kingdom | Public |
| Dental Patient Care America, Inc. | United States | Public |
| Desert Mining Inc | United States | Public |
| Devin Energy Corp | United States | Public |
| Discovery Oil Ltd | United States | Public |
| Diversified Oil and Gas Holdings Ltd | Canada | Public |
| Dominion Energy plc | United Kingdom | Public |
| Donetskoblgaz JSC | Ukraine | Public |
| Doral Energy Corp. | United States | Public |
| Double Halo Resources Inc. | Canada | Public |
| Drake Pacific Enterprises Ltd. | Canada | Public |
| DualEx Energy International Inc. | Canada | Public |
| Dynamic Resources Corp. | United States | Public |
| Dynastar Inc. | Canada | Public |
| Eagle Geophysical, Inc. | United States | Public |
| Eastern Lubricants Blenders Limited | Bangladesh | Public |
| Ecco Energy | United States | Public |
| Elkwater Resources Ltd. | Canada | Public |
| Empire Petroleum Corporation | United States | Public |
| Empresa Petrolera Andina SA | Bolivia | Public |
| Empresa Petrolera Chaco S.A. | Bolivia | Public |
| Encore Energy Systems Inc | United States | Public |
| Energas Resources Inc | United States | Public |
| Energopetrol d.d. | Bosnia & Herzegovina | Public |
| Energulf Resources Inc. | Canada | Public |
| Energytec, Inc. | United States | Public |
| Enerjex Resources Inc | United States | Public |
| ENI LASMO plc | United Kingdom | Public |
| Epic Energy, Inc | Canada | Public |
| Equinox Offshore Accommodation Ltd | Singapore | Public |
| Equital Ltd. | Israel | Public |
| Eurasia Energy Limited | United Kingdom | Public |
| Euromax Resources Ltd. | Canada | Public |
| Everock Inc | Canada | Public |
| Exact Energy Resources Inc. | Canada | Public |
| Exile Resources Inc. | Canada | Public |
| Explortex Energy Inc | Canada | Public |
| Exxoteq Corporation Ltd | India | Public |
| First Seismic Corporation | United States | Public |
| First Star Resources Inc. | Canada | Public |
| Flair Petroleum Corp | Canada | Public |
| FLEX LNG Ltd | United Kingdom | Public |
| Fomack Energy Inc | Canada | Public |
| Foraj Sonde S.A. Craiova | Romania | Public |
| Forbes Energy Services Ltd | United States | Public |
| Foreland Corporation | United States | Public |
| Forster Drilling Corporation | United States | Public |
| Fortune Oil and Gas, Inc. | Canada | Public |
| Friendly Energy Exploration | United States | Public |
| Gagan Gases Limited | India | Public |
| Galleria Opportunities Inc | Canada | Public |
| Galloway Energy, Inc. | Canada | Public |
| Gas Corona S.A.E.C.A. | Paraguay | Public |
| Gastem Inc. | Canada | Public |
| General Gas Corp | Canada | Public |
| Geo Petroleum, Inc. | United States | Public |
| Geocom Resources, Inc. | United States | Public |
|
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