Ambassador Geoffrey Pyatt is a Senior Managing Director of the Energy and Critical Minerals practice at McLarty Associates, and a distinguished fellow at the Atlantic Council’s Global Energy Center. He held a variety of senior leadership positions across a distinguished 35-year career in the U.S. Foreign Service.

Pyatt managed complex challenges across issues of international energy, military cooperation, regional geopolitics, and European and Asian affairs.

Amb. Pyatt most recently served as Assistant Secretary of State for Energy Resources (ENR) where he led the G7+ effort to mobilize international support for Ukraine's energy resilience and reduce Russia's energy revenues. As America's chief energy diplomat, Amb. Pyatt advanced energy partnerships with key allies and partners including Japan, the Republic of Korea, India, Australia, Brazil, and the European Union, and directed US diplomatic efforts to diversify supply chains for critical minerals to power the energy transition.

Prior to his confirmation as Assistant Secretary, Amb. Pyatt was U.S. Ambassador to Greece during the Obama, Trump and Biden administrations, and Ambassador to Ukraine from 2013 to 2016. In Greece Amb. Pyatt led efforts to build regional energy cooperation and worked with U.S. partners to expand bilateral cooperation in shipbuilding, high technology, military coordination and education. He was widely recognized for his leadership as U.S. Ambassador to Ukraine during Russia's 2014 invasion of Crimea. In Washington he also served as Principal Deputy Assistant Secretary of State for South and Central Asia Affairs and was Deputy Chief of Mission at the US Mission to the International Organizations in Vienna, where he represented the United States to the International Atomic Energy Agency. 

Among other recognitions Amb. Pyatt is a recipient of the Secretary of Defense Meritorious Civilian Service Medal (DoD’s second highest civilian honor) and the Secretary of State's Distinguished Honor Award. He holds a MA in international relations from Yale University and a BA in political science from the University of California, Irvine.