Two employees walking at a Marathon Oil facility

working together

Working with Marathon Oilsuppliers

Our Global Supply Chain organization obtains goods and services from outside vendors that align with our Code of Business Conduct, and demonstrate compliance with applicable safety, environmental and transportation laws and regulations.

Successful supplier candidates should:

  • Be financially viable
  • Be competitive and have “value added” technical, cost or service advantages
  • Be ethical, with high health, environment, safety and security standards
  • Understand Marathon Oil’s business
  • Follow ISO or others appropriate industry procedures and processes
  • Have timely and accurate electronic invoice submission processes

Required Supplier Onboarding

All new Marathon Oil suppliers are required to complete the Supplier Training Registration Form and associated video:

Supplier Training Registration Form

Supplier Training Video


Additional Supplier Reference Documents:



Supplier hotline

Questions regarding outstanding invoice status should be directed to the Marathon Oil Supplier Hotline:

PHONE: 866-323-1836


In the UK, use either 808-234-2552 (BT tel. carrier) or 800-068-9831 (MCL tel. carrier).

Our values

Our people and workplaces are safe
We’re committed to providing safe and healthy workplaces where our employees, contractors and others involved with our operations can work in a secure setting, free of injury or illness.

Our operations are clean
We conduct operations in a manner designed to protect the environment and will work to minimize wastes, emissions and other releases in all of our activities.

We practice responsible action wherever we work
We strive to be a good corporate citizen wherever we operate, in accordance with our corporate social responsibility position statement. We maintain high ethical standards, support sustainable business practices, and prepare for and respond accordingly to emergencies that may occur.

Read about our business strategy and company values


See how Marathon Oil works with local communities