The word Qāʾim (Arabic: القائم) may refer to:
- People
- Muhammad al-Qa'im Bi-Amrillah (893-946), the second Fatimid Caliph in Ifriqiya
- Al-Qa'im (caliph) (1031-1075), an Abbasid Caliph in Baghdad. The son of al-Qadir
- Al-Qa'im (Cairo) (1451-1455), an Abbasid Caliph on behalf of Mamluk Sultans of Cairo
- Al-Qa'im (person), a messiah-like figure in Shi'a Islam, similar to the Mahdi
- Places
- Al-Qa'im (town), a town in Iraq, located near the Syrian border and situated along the Euphrates River
- Al-Qa'im (district), the district in which the above town is located
- Qaimganj, a town in the Indian state of Uttar Pradesh