The designation of the oldest mosque in the world requires careful use of definitions, and must be divided into two parts, the oldest in the sense of oldest surviving building, and the oldest in the sense of oldest mosque congregation. Even here, there is the distinction between old mosque buildings that have been in continuous use as mosques, and those that have been converted to other purposes; and between buildings that have been in continuous use as mosques and those that were shuttered for many decades. In terms of congregations, they are distinguished between early established congregations that have been in continuous existence, and early congregations that ceased to exist.
01. Quba Mosque, Saudi Arabia
02. Al-Masjid al-Nabawi, Saudi Arabia
03. Masjid al-Qiblatain, Saudi Arabia
04. Jawatha Mosque, Saudi Arabia
05. Masjid al-Haram, Saudi Arabia
06. Great Mosque of Kufa, Iraq
07. Mosque of Uqba, Tunisia
08. Imam Hussain Mosque, Iraq
09. Al-Aqsa Mosque, Jerusalem
10. Al-Zaytuna Mosque, Tunisia
