- an official appointed by the government of one country to look after its commercial interests and the welfare of its citizens in another country.
- either of the two chief magistrates of the ancient Roman republic.
- one of the three supreme magistrates of the First Republic during the period 1799–1804.
- an official appointed by a sovereign state to protect its commercial interests and aid its citizens in a foreign city
- (in ancient Rome) either of two annually elected magistrates who jointly exercised the highest authority in the republic
- (in France from 1799 to 1804) any of the three chief magistrates of the First Republic
