Sayyid Mohammad Sadeq Kharazi (Persian: سید محمدصادق خرازی; born 2 March 1963) is a former Iranian diplomat and advisor to Iran's former President Khatami.

Kharazi started his career in 1983 during the Iran–Iraq War in the High Defence Council and the IRIB.

Kharazi has a keen interest in calligraphic and historical manuscripts and is an avid collector of such items.

Currently, Kharazi works closely with Mohammad Khatami on the issue of dialogue among civilizations and is his senior advisor.

He co-founded the 'Encyclopedia of Contemporary Islam', which researches Iran's cultural and political movements and schools of thought in the past two centuries.