Ayatollah Abdol-Hamid Masoumi-Tehrani (Persian: عبدالحمید معصومی تهرانی‎) is an Iranian cleric based in Tehran, Iran. Masoumi-Tehrani was born in Tehran to a distinguished cleric family and attained the rank of Marja al-Taqlid or a "source of emulation" in 1988. Masoumi-Tehrani is an accomplished calligrapher and spends much of his time engaged in this profession as he believes that money should not be made through religion. He strongly advocates human rights for all regardless of religious ideology or belief and has created in calligraphy from the Torah, Psalms and Quran to foster unity amongst religions.