Moser, William H., 1954-

William H. Moser (born 1954) is an American diplomat who serves as the United States Ambassador to Kazakhstan.

Moser earned a Bachelor of Arts at the University of North Carolina, Chapel Hill and studied at the University of Cologne in Germany.

He is a career member of the Senior Foreign Service, class of Minister-Counselor. He has served as an American diplomat since 1984. He has served at seven United States Missions overseas, including as United States Ambassador to Moldova from 2011 to 2015, and in senior leadership positions at the United States Department of State.

In 2011, President Barack Obama nominated Moser to be the United States Ambassador to Moldova. He served from September 21, 2011 to January 22, 2015.

On August 13, 2018, President Trump nominated Moser to be the United States Ambassador to Kazakhstan. His nomination was confirmed by voice vote in the United States Senate on January 2, 2019. He was sworn in on February 12, 2019. He presented his credentials on February 18, 2019. Moser previously served in Kazakhstan in 1996, in the then-Embassy in Almaty as a management officer and then as energy attaché.

Moser speaks Russian, French and German. He is married and has three children.