About Sean O'Neill

Sean Kotaro O'Neill is an American diplomat and the United States Ambassador to Thailand since February 2026. O'Neill is a career member of the Senior Foreign Service, and he had served as Senior Bureau Official for the US State Department's Bureau of East Asian and Pacific Affairs.

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Sean O'Neill

American diplomat

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About Sean O'Neill

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Facts from Wikidata (CC0).

Not who you're looking for? Others named Sean O'Neill: Irish rower · Northern Irish association footballer (born 1988) · American table tennis player · Canadian actor