Ayatollah Mirza Husayn Khalili Tehrani (1815-1908)[1] (Persian: میرزا حسین خلیلی تهرانی) was an Usuli Shi'a jurist and among the four sources of emulation at the time of Iranian Constitutional Revolution.

[2] When the parliament came under attack from imperial court's cleric, Shaykh Fazlullah Nuri, Tehrani alongside other jurists of Najaf sided with democracy and acted as a legitimising force.

[3] They invoked the Quranic command of ‘enjoining good and forbidding wrong’ to justify democracy in the period of occultation, and linked opposition to the constitutional movement to ‘a war against the Imam of the Age’.

[4] Akhund Khurasani, Mirza Husayn Tehrani and Shaykh Abdullah Mazandarani, theorised a model of religious secularity in the absence of Imam, that still prevails in Shia seminaries.

Mohammad Ali shah wrote letters to the sources of emulation in Najaf, seeking their support against the conspiracies he alleged by Babis and other heretics.