| Keith Kellogg | National Security Advisor to the Vice President (April 2018–present) |
| George Kent | Deputy Assistant Secretary of State, Bureau of European and Eurasian Affairs, U.S. Department of State (September 2018–present) |
| Igor Kolomoisky | Co-owner, PrivatBank Co-owner, 1+1 Media Group |
| Charles Kupperman | U.S. Deputy National Security Advisor (January 2019–September 2019) |
| Serhiy Leshchenko | Ukrainian Member of Parliament (November 2014–July 2019) |
| Yuriy Lutsenko | Prosecutor General of Ukraine (May 2016–August 2019) |
| Joseph Maguire | Acting U.S. Director of National Intelligence (August 2019–present) |
| Brian McCormack | Associate Director for Natural Resources, Energy & Science, U.S. Office of Management and Budget (September 2018–present) |
| Michael McKinley | Senior Advisor to the U.S. Secretary of State, U.S. Department of State (November 2018–October 2019) |
| Tim Morrison | Senior Director for European and Russian Affairs, National Security Council (July 2019–November 2019) |
| Mick Mulvaney | Director of the U.S. Office of Management and Budget (February 2017–present) Acting Chief of Staff to the President (January 2019–present) |
| Nellie Ohr | Contractor, Fusion GPS |
| Mike Pence | Vice President of the United States (January 2017–present) |
| Rick Perry | U.S. Secretary of Energy (March 2017–present) |
| Mike Pompeo | U.S. Secretary of State (April 2018–present) |
| Petro Poroshenko | President of Ukraine (June 2014–May 2019) |
| Vadym Prystaiko | Minister of Foreign Affairs of Ukraine (August 2019–present) |
| Philip Reeker | Acting Assistant Secretary of State, Bureau of European and Eurasian Affairs, U.S. Department of State (March 2019–present) |
| Mark Sandy | Deputy Associate Director for National Security, U.S. Office of Management and Budget (December 2013–present) |
| Viktor Shokin | Prosecutor General of Ukraine (February 2015–March 2016) |
| Oksana Shulyar | Deputy Chief of Mission, Embassy of Ukraine to the U.S. |
| Gordon Sondland | U.S. Ambassador to the European Union (July 2018–present) |
| William Taylor | U.S. Ambassador to Ukraine (June 2006–May 2009) U.S. Chargé d'Affaires, a.i., U.S. Embassy Kyiv (June 2019–present) |
| Andrii Telizhenko | Political officer, Embassy of Ukraine to the U.S. |
| Donald J. Trump | President of the United States (January 2017–present) |
xi
