Mohammad Reza Heydari ( ???? ??? ????? born 12 October 1966) is a former Iranian consul in Oslo who resigned his post in January 2010 in acting against his own country's Government.
He resigned due to the Iranian government's violent crackdown on protesters in the 2009–2010 Iranian election protests.
Mohammed-Reza Heydari is also the first Iranian diplomat to resign in protest against the regime's violence against the people.