The Mosque of Salman al-Farsi (Arabic: مسجد سلمان الفارسي) is a historic mosque located in the city of Salman Pak, Al-Mada'in district, Iraq. It contains the purported tomb of Salman al-Farsi, a Sahaba, and this the mosque is named after him.

It is historically a Sunni mosque, however, at some point of time the mosque was removed from the Sunni Endowment and given to the Shi'ite managements.

The mosque was established in 1950 over a pre-existing mausoleum dedicated to Salman al-Farsi which was already in existence before the 1920s. In 1931, the bodies of Jabir ibn Abdullah, Hudhayfah ibn al-Yaman, and Ali al-Tahir ibn Muhammad al-Baqir were exhumed due to their graves being water-logged, and the bodies were transferred to new tombs next to the old mausoleum. The report of the bodies being transferred is sometimes contested, however, as Jabir ibn Abdullah is reported to have died in Medina. Later in 1950, the mosque was established over the mausoleum and new tombs, with funding from the Iraqi government.

In 2017, a new zarih was placed around the grave of Salman al-Farsi. The ceremony of the placement of the zarih was also attended by Iraj Masjedi, the Iranian ambassador to Iraq, as well as several other Shi'ite clerics.

The mosque is visited because of the sacred tombs within it. However, the mosque also holds Qur'anic memorization courses as well as classes to study the Shari'ah law. Religious festivals are held in the mosque as well.

On February 24, 2006, during the year the Al-Askari Shrine was bombed, two rockets were fired by rebels, which landed in the area of the mosque. Significant damage was caused to the building, but no casualties were reported. Damage was done to the main dome and a minaret.

• Islam in Iraq
• List of mosques in Iraq