清真寺（阿拉伯语、波斯语：单数مسجد masjid，复数مساجد‎ masājid），又称清真寺、礼拜寺，是供穆斯林群众使用的宗教场所。

对于什幺宗教场所可视作**堂，逊尼派的**里有严格以及具体的要求，不符合规定的场所则称作musallah。正式被划定为**堂的场地（通常是更大综合建筑物的一小部分）有严格的使用限制，而**规定，一旦某个场地被正式划定为**堂，该场所将直到末日都作为**堂用途，被非穆斯林摧毁或占用的情形是绝对不容许的。

许多**堂都有精致的圆顶、宣礼塔和礼拜殿，各有独特的建筑风格。**堂起源于阿拉伯半岛，如今所有人类聚居的大陆里均能发现其踪影，用作穆斯林（**徒）礼拜的地方，也可以作传达信息、教育以及争议解决等用途。**堂的会众由伊玛目带领祷告。

A mosque (/mɒsk/; from Arabic:المسجد‎ Al-masjid) is a place of worship for followers of Islam.

There are strict and detailed requirements in Sunni fiqh for a place of worship to be considered a mosque, with places that do not meet these requirements regarded as musallas. There are stringent restrictions on the uses of the area formally demarcated as the mosque (which is often a small portion of the larger complex), and, in the Islamic Sharia law, after an area is formally designated as a mosque, it remains so until the Last Day.