Sadegh Ghotbzadeh (صادق قطب‌زاده;‎ 1936–September 15, 1982) was Iranian Foreign Minister (November 30, 1979–August, 1980) during Iran hostage crisis. He was a supporter of National Front of Iran and was a close aide of Ayatollah Khomeini when he was in exile in France. He accompanied Khomeini on his travel back to Iran on February 1, 1979. Right after Islamic Revolution of Iran, Ghotbzadeh was appointed as managing director of National Iranian Radio and Television (NIRT) and tried to overhaul it to be in line with Islamic teachings. This was criticised by a group of Iranian intellectuals and also the Interim Government. He was appointed as Foreign Minister when Abolhassan Banisadr resigned as acting Foreign Minister amid heated disputes on fate of American hostages. He later resigned when his diplomatic approach to resolve the crisis ended in a deadlock.

In April, 1982 he was arrested among a group of army officers and clerics (including son-in-law of religious leader Ayatollah Kazem Shariatmadari ) all accused of plotting for assassination of Khomeini and overthrow of Islamic Republic. He denied the accusations but confirmed existence of a plot on changing the government (then led by Ali Khamenei as President). He was sentenced to death and executed on September 15.