al haram mosque in makkah
The fourth biggest mosque is Istiqlal Mosque in Jakarta, Indonesia
Madni Masjid (Mosque) Located in Aisha Manzil Karachi is the Biggest Mosque of Karachi.
The Baitun Nur Mosque in Calgary, Alberta is the biggest mosque in Canada and in North America.
Grand Mosque (Masjed al kabeer)
Akhundzada
the biggest and the largest mosque in the world is MASJID-UL-HARAM it means KAABA-TULL AH
I think it is the famous Blue Mosque, built in 1609 by Sultan Ahmad 1
Regents Park
Either the Holy Prophet's Mosque in Madinah (called Masjid Nabawi) or the Mosque in Makkah where the Kabah is situated (called Masjid Haram).
Covering an area of 5,000 square meters the mosque has the capacity to accommodate 300,000 worshippers, therefore, capicity-wise it is the largest mosque in the world.
Badshahi Mosque is the largest mosque in Pakistan
I don't know the name but, the biggest one is in Morocco.