John Armstrong is the Principal Deputy Assistant Secretary for Consular Affairs. Prior to assuming this role, he served as Senior Bureau Official in the Bureau of Consular Affairs from February 27 – December 22, 2025, and also briefly served as Deputy Assistant Secretary for Overseas Citizens Services. He is a career member of the Senior Foreign Service and joined the Foreign Service in 1994.

Previously, Mr. Armstrong served as Consul General in Lima, Peru. His other domestic service includes Director of the Office of Eastern European Affairs, Director of the Washington Passport Agency, Senior Political Officer on the Russia Desk, and Belarus Desk Officer. Overseas, he served in Warsaw (Economic Counselor, Labor Officer, Trade Officer), Nassau (Consular Section Chief/acting Deputy Chief of Mission), Kyiv (Deputy Consul General), and Bucharest (Nonimmigrant Visa Chief).

Principal Deputy Assistant Secretary Armstrong earned degrees in history at the University of Minnesota (BA) and University of Wisconsin-Madison (MA). He was a Fulbright Researcher in Poland. He speaks Polish, Romanian, Spanish, Ukrainian and some Russian.