Michael E. Guest (born 1957) was a U.S. Ambassador to Romania during the George W. Bush presidency. Guest was sworn in by U.S. Secretary of State Colin Powell on September 18, 2001, and took up his duties on September 24, 2001. His partner Alex Nevarez was acknowledged by Powell at the swearing-in ceremony in the State Department Diplomatic Reception Room. LGBT rights groups viewed Guest's appointment, and Powell's remarks, as historic and indicative of greater recognition of gay State Department employees and same-sex couples. Socially conservative groups expressed opposition to Guest's appointment and to Powell's gesture.