Unaizah is a Saudi Arabian city in the Al Qassim Province. It lies south of the province capital of Buraydah and north of Riyadh. It is the second largest city in Al Qassim.
Historically, Unaizah or Unayzah was an important stopping point for Muslim pilgrims coming from Mesopotamia and Persia on their way to Makkah. It is surround by sand dunes to its north and west, which are known locally as the Al Ghamis Sands. The Al Ghadha Woods are located to the north of the city. Next to Unaizah is the Al-Aushaziyah salt lake (or Sabkha), which is considered an official part of the city.
