Grand Ayatollah Sayyid Muhammad-Sadiq Husayni Rohani (Persian: محمد صادق حسینی روحانی; 16 July 1926 – 16 December 2022) was an Iranian Shia marja'.

[2] Rohani was one of the first senior clerics to be placed under house arrest under direct order from grand Ayatollah Ruhollah Khomeini just a few years after the Iranian revolution.

It is believed that his father was the person who convinced Sheikh Abd al-Karim al-Haeri to move to the city of Qom and establish the seminary there.

[7] Ayatollah Zadeh Milani has said “al-Khoei once said to my father Ayatollah al-Milani: I take pride in the Islamic Seminary in which an eleven year old studies alongside the elder students and learned scholars, and with reads makaseb (a compilation by Morteza Ansari that is taught in Islamic seminaries) and understands the contents better than them and further analyses it”.

[2] Both Rohani and Khoei issued fatwas against the purchase, sale and reading of the writings of prominent academic Ali Shariati.

[11] Rouhani was one of the first senior clerics to be placed under house arrest under a direct order from Ayatollah Khomeini just a few years after the Iranian revolution.

Furthermore, Rohani was pledged “not to continue as a ‘Source of Emulation’ for his seven million followers and not to have any visitors.” After the fall of Saddam Hussein, Rouhani attempted to relocate to Iraq but was barred from leaving the country.

One effect of this was his issuing of a fatwa approving of Iranian intervention in the Syrian civil war, describing it as a jihad and labelling those killed in it as martyrs.