Ambassador

An ambassador is the official diplomatic representative of one government or political entity to another, or to an organization of political entities. Ambassadors also function as the heads of embassies. Customarily in the United Federation of Planets, ambassadors represent the Federation to non-member worlds, and sometimes member worlds have ambassadors to represent their worlds to the Federation itself. (TOS: "Journey to Babel").

Jean-Luc Picard once called Lwaxana Troi the "acting ambassador of good will" when Doctor Timicin of Kaelon II came aboard the USS Enterprise-D in late 2367. (TNG: "Half a Life")

See also:
 * Ambassadors
 * USS Ambassador
 * Ambassador class

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