Extractive Companies:
- Abu Dhabi National Oil Co
- Arco
- BHP Petroleum
- BP
- Chevron
- China Oil (Taiwan)
- CITGO
- Conoco-Phillips
- Esso Australia
- ExxonMobil
- Exxon CIS
- ExxonNeftegas
- Hess Corporation
- Husky Oil
- Marathon Petroleum
- Noble Energy
- PetroCanada
- Phillips
- Qatar Petroleum
- Shell Oil Co.
- Southern Peru Copper
- Stone Energy
- Woodside Energy
Government and International Organizations:
- Alaska Clean Seas
- American Petroleum Institute (API)
- Australian Maritime Safety Authority (AMSA)
- Burrard Clean-WCMRC
- Canadian Coast Guard
- Canadian Investment Development Agency (CIDA)
- Eastern Canada Response Corp.
- European Maritime Safety Agency (EMSA)
- Environment Canada
- European Bank for Reconstruction & Development (EBRD)
- Freemantle Ports, Western Australia
- International Maritime Org. (IMO)
- International Monetary Fund (IMF)
- International Petroleum Industry
Environmental Conservation Association (IPIECA)
- International Tanker Owners Pollution Federation (ITOPF)
- Norwegian Coastal Administration
- Queensland Parks and Wildlife Service (Australia)
- UN Compensation Commission
- United States Coast Guard
- Wetlands International
Service and Pipeline Companies:
- Alyeska Pipeline Co.
- Bitor
- BTC Pipeline (Azerbijan-Georgia-Turkey)
- Clean Seas
- Enbridge
- Florida Light and Power
- Marine Spill Response Corp.
- Northern Gateway Project
- NRC
- Oil Spill Response Ltd.
- Olympic Pipeline Co.
- NJResources
- Protection & Indemnity (P&I) Clubs
- Sakhalin Energy Investment Co.
- SeaRiver Maritime
- T&T Salvage
- Witt O'Brien's