Grand Ayatollah Mohammad Fazel Lankarani (Persian: محمد فاضل لنکرانی; 1931 – 16 June 2007) was an Iranian Twelver Shia Marja'.

Lankarani received his ijtihad, the permission of independent interpretation of the legal sources (the Qur'an and the Sunnah), from Ayatollah Boroujerdi at the age of 25.

"[3] Fazel Lankarani was a strong supporter of Ayatollah Khomeini, being jailed several times and exiled once prior to the Iranian revolution.

[6] Lankarani also issued a fatwa calling for the deaths of another author, Rafiq Tağı, an Azeri writer, and Tagi's editor, Samir Sədaqətoğlu, who were accused of criticizing Islam.

According to Iranian and Islamic law, these sentences are only applicable if either individual freely and wilfully enters Iran and submit themselves to the authorities.

[citation needed] Possibly related to the fatwa, Rafiq Tağı died in a Baku hospital on November 19, 2011, after having been stabbed with a knife seven times in public.