Peter Henry Barlerin is an American diplomat and career member of the Senior Foreign Service who served as the United States Ambassador to Cameroon from 2017 to 2020.

He has served as an American diplomat since 1989.

Prior to becoming an ambassador, he was the Deputy Assistant Secretary in the Bureau of African Affairs at the United States Department of State.

Barlerin has served at seven U.S. missions overseas, including posts in Madagascar, Japan, France, Chad, and Mali.

[1] Barlerin speaks French, Japanese, Spanish, and Norwegian.