Masoud Hosseini Khamenei (; born 1974), also known as Mohsen Khamenei (), is an Iranian Twelver Shia cleric. A member of the Khamenei family, he is the third son of the second Iranian supreme leader Ali Khamenei, and the younger brother of the third and current supreme leader, Mojtaba Khamenei.
Khamenei is studying and teaching in the seminary of Qom; and is a member in Society of Seminary Teachers of Qom (Persian: ). Seyyed Khamenei does not have governmental/non-governmental or formal position; moreover, his father (Ali Khamenei) has prohibited his son(s) from accepting governmental, or similar positions. According to Mehr News Agency, Masoud has the most attention out of Ali's sons in collecting the memoirs of his father and likewise in running the former Supreme Leader's activities related to his publications and preservation.
Khamenei also has the title of "Hujjatul-Islam", and is the husband of Sadiq-Kharazi's sister; likewise, he is the son-in-law of Mohsen Kharazi (Tehran's representative in the assembly of experts).
Khamenei's family are among the Iranian Sayyid families who are from Hosseini Sayyid, and their lineage is connected to the fourth Imam of Shia Islam, Ali ibn Husayn Zayn al-Abidin (Persian/Arabic: ùÃÂàèàÃÂóÃÂÃÂàòÃÂàçÃÂùçèïÃÂÃÂ) (known as "Imam Sajjad"), according to "Khamenei family tree". Khamenei married the daughter of Mohsen Kharazi.
Khamenei manages several of his family institutions. He reportedly holds over $400 million in banks in France and United Kingdom, with additional $100 million in Tehran, Iran. Khamenei also controls the sales of Renault vehicles in Iran.