Grand Ayatollah Naser Makarem Shirazi (Persian: ناصر مکارم شیرازی‎, born 25 February 1927 in Shiraz, Iran) is an Iranian Shia marja' and religious leader.

Grand Ayatullah Husayn Wahid Khorasani (آية الله العظمى حسين وحيد الخراساني‎) is one of the most senior Twelver Shia Marja' living in Iran. He is the current head of Qom Seminary in Qom. He was born in Nishapur, Iran on 1 January 1921. He moved to Najaf, Iraq in 1949 and studied in Ayatollah Khoei Seminary and moved back to Iran in 1972. Currently, he resides in Qom and is considered to be a source of emulation.

Grand Ayatollah Sayyid Ali Husseini Sistani (born 4 August 1930), commonly known as Ayatollah Sistani, is one of the most powerful and influential Twelver Shia Marja in Iraq and the head of many of the hawzahs (seminaries) in Najaf.

Ayatullah Ali Akbar Faydh, famously known as Ayatollah Mishkini, was born in 1921 in one of the villages in the precincts of the city of Mishkin. He studied the preliminary stages of Islamic studies under the guidance of his father in the holy city of Najaf, Iraq following which he returned to his hometown. After his father’s death, he left for Ardabil where he studied Islamic sciences in addition to Arabic grammar and morphology while in Ardabil.

Grand Ayatollah Mohammad Taqi Bahjat Foumani (محمدتقی بهجت فومنی‎) (24 August 1916 – 17 May 2009) was an Iranian Twelver Shia Marja'. He was born in Fouman, Gilan province in the north of Iran. He started his primary education from Fouman. He then travelled to Karbala and Najaf at an early age to continue his education. In Najaf, he was a student of Abu'l-Hasan al-Isfahani, Shaykh Muhammad Kazim Shirazi, Mirza Hussein Naini, Agha Zia al-Din Araghi, and Shaykh Muhammad Hussain al-Gharawi. In addition, Ali Tabataba'i (known as Ayatollah Qazi) was his teacher in spirituality and gnosticism.

Grand Ayatollah Seyyed Hossein Borujerdi (آیت الله العظمی سید حسین طباطبایی بروجردی) (March 1875 – 30 March 1961) was an leading Iranian Shia Marja' in Iran from roughly 1947 to his death in 1961.

Ayatullah Mazaheri was born into a religious family in 1934 in the city of Isfahan, Iran. He began his Islamic studies in the Hawza 'Ilmiyyah of Isfahan and completed his Arabic studies under the guidance of the late Hajj Agha Ahmad Muqaddas. His higher studies were conducted under the guidance of Ayatullah Khadimi, and Ayatullah Fayyad. Four years later, he moved to Qum to continue his studies under the supervision of the late scholar Shaikh Abd al‑Jawad Jabal al‑Amuli, the late Marja Ayatullah al‑Sayyid Shahab al‑Din Mar'ashi Najafi, and the late Ayatullah Shaikh Murtada Haeri.

Ayatullah Ibrahim Amini, an eminent scholar and jurisprudent is a professor at the Religious Learning Center at Qum where he is involved in teaching, writing and research activities. He very frequently represents the Islamic Republic of Iran at various international conferences.