Masjid Raja Abdullah I

The King Abdullah I Mosque is a mosque and cultural centre on a hill in the western part of Amman, the capital of Jordan. It is named after Abdullah I, the emir and first king of Jordan. Its blue main dome, decorated with mosaics, is regarded as a landmark of the city. Two smaller domes and two minarets stand beside it. The men's prayer hall beneath the main dome has no supporting columns in the central space, which recalls the Dome of the Rock in Jerusalem. The mosque is described as holding about 3,000 worshippers. The complex also contains a museum devoted to Islamic history and religion, and according to the sources it is the only mosque in Amman open to non-Muslim visitors.

The mosque was built between 1982 and 1990 on the commission of King Hussein I and named after his grandfather, Abdullah I. The planning is traced to the Bohemian-German architect Jan Cejka.

Until 11 April 2006 it served as the national mosque of Jordan. That role then passed to the King Hussein bin Talal Mosque, which King Abdullah II had built in 2004–2005 in memory of his father.