Al Majma'ah (Arabic: المجمعة) is a city and a governorate in Riyadh Province, Saudi Arabia. It is located at around 25°54′14″N 45°20′44″E / 25.90389°N 45.34556°E, and it is the capital of the Sudair region. The city has an area of 30,000 square kilometres. The population of the town is around 70,000, while the population of the governorate as a whole is 151,877 (2022). Al-Majma'ah Governorate borders the Eastern Province and Al-Qassim Province to the north, Thadig and Shaqra to the south, Rumah to the east, and Al-Ghat and Al-Zulfi to the west.
Founded in 1417 CE by an immigrant from the Al-shammari tribe, Al Majma'ah is considered part of the lands and homes of the Mutair tribe in Najd