QA or qa may refer to:
Qatar (, (listen), or (listen); Arabic: قطر Qaṭar [ˈqɑtˤɑr]; local vernacular pronunciation: [ˈɡɪtˤɑr]), officially the State of Qatar (Arabic: دولة قطر Dawlat Qaṭar), is a country located in Western Asia, occupying the small Qatar Peninsula on the northeastern coast of the Arabian Peninsula.
Qantas Airways (; ASX: QAN) is the flag carrier of Australia and its largest airline by fleet size, international flights and international destinations.
Qatar Airways Company Q.C.S.C. (Arabic: القطرية, al-Qaṭariya), operating as Qatar Airways, is the state-owned flag carrier of Qatar.
QAnon () is a far-right conspiracy theory detailing a supposed secret plot by an alleged "deep state" against U.S.
A qanat or kariz is a gently sloping underground channel to transport water from an aquifer or water well to surface for irrigation and drinking, acting as an underground aqueduct.
Qarabağ Futbol Klubu, commonly known as Qarabağ (pronounced [ɡɑɾɑbɑ'ɣ]) is an Azerbaijani football club playing in the Azerbaijan Premier League.