Georgi Mikayeli Petrosian (Armenian: Գեորգի Միքայելի Պետրոսյան) (born 10 January 1953) is an Armenian politician who previously worked in the Republic of Artsakh.

From 1988 to 1990 Petrosyan was a participant in the Karabakh movement to unite Nagorno-Karabakh with Armenia.

After the ARF won the 1991 Nagorno-Karabakh parliamentary election, Petrosian was elected vice president of the Supreme Council of the Nagorno-Karabakh Republic from January to April 1992, and took over as acting president upon the death of Artur Mkrtchian in April 1992.

[2][3] In June 1993, Petrosian resigned as acting president due to his opposition to a peace plan between Armenia and Azerbaijan (which was not implemented).

[5] His resignation was partly responsible for the weakened influence of the ARF as a political party in Artsakh.