An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

About EPA

Organization Chart for the Office of International and Tribal Affairs (OITA)


Office of International and Tribal Affairs (OITA) Assistant Administrator and Deputy Assistant Administrator

About OITA


Office of Regional and Bilateral Affairs (ORBA)

About ORBA

  • North America Program
  • Middle East, Latin America, Africa and Caribbean Program
  • Asia-Pacific and Europe Program

Office of Global Affairs and Policy (OGAP)

About OGAP

  • International Organizations Program
  • Trade and Economic Program
  • Environmental Media Program

Office of Management and International Services (OMIS)

About OMIS

  • Budget & Resources Management Program
  • Administrative Services
  • International Travel Office

American Indian Environmental Office (AIEO)

About AIEO

  • Planning & Communications
  • Policies & Partnerships
  • Tribal Capacity Development