Shia Islam in Iraq has a history going back to the times of Ali ibn Abi Talib, the first imam of Shia Islam and fourth caliph of Sunni Islam who moved the capital of the early caliphate from Medina to Kufa two decades after the death of Muhammad. Today, Shia Muslims make up around 55% of the Iraqi population. Iraq is the location of the holy cities of Najaf and Karbala, pilgrimage sites for millions of Shia Muslims.

Al-Kadhimiyya Mosque is a Shi'a Islamic mosque and shrine located in the Kādhimiya suburb of Baghdad, Iraq. It contains the tombs of the seventh and ninth Twelver Shī'ī Imāms, respectively Mūsā al-Kādhim and his grandson Muhammad al-Jawad. Also buried within the premises of this mosque are the historical scholars Shaykh Mufīd and Shaykh Naṣīr ad-Dīn aṭ-Ṭūsi. Directly adjacent to the mosque are two smaller shrines, belonging to the brothers Sayyid Raḍī and Sayyid Murtadā and Qadi Abu Yusuf al-Ansari.