1. Quba Mosque, Saudi Arabia
First Built: 622

Determining the oldest mosques in the world involves precise definition usage, dividing them into two categories: the oldest based on the surviving building and the oldest based on the mosque congregation. Even within these categories, there are further distinctions between old mosque buildings that have remained mosques throughout history and those that have been repurposed, as well as between buildings that have continuously functioned as mosques and those that were closed for extended periods. Regarding congregations, they are differentiated between early established congregations that have continuously existed and early congregations that no longer exist.

2. Al-Masjid al-Nabawi, Saudi Arabia
First Built: 622

Al-Masjid al-Nabawi, located in Saudi Arabia, was first built in 622. It is one of the oldest mosques in the world and holds great significance as the mosque where Prophet Muhammad is buried.

3. Masjid al-Qiblatain, Saudi Arabia
First Built: 623

Masjid al-Qiblatain, situated in Saudi Arabia, was first built in 623. It gained historical importance as the mosque where the direction of prayer (qibla) for Muslims was changed from Jerusalem to Mecca.

4. Jawatha Mosque, Saudi Arabia
First Built: 629

Jawatha Mosque, found in Saudi Arabia, was first built in 629. It holds historical significance as one of the earliest mosques constructed in the region and played a vital role in the spread of Islam.

5. Masjid al-Haram, Saudi Arabia
First Built: 638

Masjid al-Haram, located in Saudi Arabia, was first built in 638. It is one of the most sacred mosques in Islam and houses the Kaaba, the holiest site for Muslims, towards which millions of Muslims worldwide face during their prayers.

6. Great Mosque of Kufa, Iraq
First Built: 639

The Great Mosque of Kufa, situated in Iraq, was first built in 639. It is renowned for its historical and architectural significance and was an important center for Islamic learning and worship in early Islamic history.

7. Mosque of Uqba, Tunisia
First Built: 670

The Mosque of Uqba, located in Tunisia, was first built in 670. It is one of the oldest mosques in North Africa and holds great cultural and historical significance as a masterpiece of early Islamic architecture. The mosque is named after Uqba ibn Nafi, an Arab general who played a crucial role in the spread of Islam in the region.

8. Imam Hussain Mosque, Iraq
First Built: 680

9. Al-Aqsa Mosque, Jerusalem
First Built: 705

10. Al-Zaytuna Mosque, Tunisia
First Built: 709

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