Raya B. Treiser

Raya Treiser is a member of WilmerHale’s Energy, Environment and Natural Resources Practice. Ms. Treiser advises clients on high-stakes energy and environmental matters at the intersection of law, policy and business. Her practice focuses on environmental, energy and climate change policies, regulations and investigations; securing federal authorizations for significant energy and infrastructure projects; negotiating complex agreements with the federal government; and developing strategies to achieve clients’ objectives with the Legislative and Executive branches of government. Ms. Treiser counsels the CEOs and senior executives of Fortune 500 companies and non-governmental organizations in connection with congressional investigations related to energy, environmental and natural resource laws and policies. Prior to joining WilmerHale, Ms. Treiser served in several senior policy positions at the Department of the Interior and the White House under President Obama, focusing on energy and infrastructure policy.

Professional Activities

Ms. Treiser is the incoming co-chair of the Public Land and Resources Committee of the ABA's Section of Environment, Energy, and Resources. She also serves on the ABA's Endangered Species and Mining and Mineral Extraction Committees. 


  • Named a Washington DC "Rising Star" in the 2019 edition of Super Lawyers
  • Selected by peers for inclusion in the 2018–2020 editions of the Best Lawyers in America for environmental law
  • Recognized in The Legal 500 United States for her energy regulatory practice in the area of oil and gas

Insights & News


  • Education

    • JD, Georgetown University Law Center, 2009

      cum laude
    • Master, Global Business Law, Sorbonne Law School and Sciences Po, 2008

    • BS, Georgetown University, 2005

      magna cum laude, School of Foreign Service
  • Admissions

    • District of Columbia

    • New York

  • Government Experience

    • Department of the Interior

      Counselor to the Deputy Secretary of the Interior
    • Executive Office of the President

      The White House

      Office of Management and Budget