Overview
American Samoa, as an unincorporated U.S. territory in the South Pacific, does not maintain independent diplomatic missions abroad. American Samoans, who hold U.S. national status, receive full consular protection and services through U.S. embassies and consulates worldwide. In Austria, the U.S. Embassy in Vienna provides comprehensive consular assistance to American Samoans traveling, living, or conducting business in Austria.
This overview comes from Visaja's worldwide missions database (visaja.com), checked against official government sources; for binding answers, the mission itself always has the final word.