Ayatollah Mohsen Heidari AleKasir (Persian:محسن حیدری آل کثیر) is an Iranian Shia Islamic cleric who was born in 1957 in a middle-class rural family in the village of Hor Riyahi Abadi[4] which is located near to Shush in Khuzestan province.

He is also one of the current temporary Imams-Jom’ah (the Imams of Friday prayer) of Ahwaz, the capital of Khuzestan province.

[6][7][8] Ayatollah Heidari AleKasir[9][10][11] has scholarly records of research and teaching at seminary and university.

He has several compilations, among: Mohsen Heidari Alekasir had/has prominent teachers who often are regarded as famous Ayatollahs such as: and other well-known Ayatollahs, among Mirza Jawad Tabrizi, Hashemi Shahroodi, Mousavi Jazayeri, Javadi Amoli, Mesbah Yazdi, Mazaheri, Ma’refat, Khaz’ali and so on.

Meanwhile, according to his statement, Ayatollah Sobhani and َAyatollah Mousavi Jazayeri have confirmed his Ijtihad and power on Inference of religious Ahkam (rulings) in writing.