Esteban Mestivier (died 1832) served as the Argentine Military and Civil commander in the Falkland Islands for a brief period in 1832. His appointment to the role was gazetted in the British and Argentine Packet News in September 1832. The announcement led to the British consul issuing a note of protest, which other than a brief acknowledgement from Argentina went unanswered. This combined with the USS "Lexington" raid of 1831, is considered to have prompted the British to send a small naval patrol to re-assert British sovereignty in the Falkland Islands.