Tuz Khurmatu (Arabic: طوزخورماتو, Turkish: Tuzhurmatu, Kurdish: دووز خورماتوو, romanized: Dûz Xurmatû, also spelled as Tuz Khurma and Tuz Khormato) is the central city of Tooz District in Saladin Governorate, Iraq, located 55 miles (89 km) south of Kirkuk. Its inhabitants are predominantly Shia Turkmen, with a minority of Arabs and Sunni Kurds.

The name of the city is in the local Iraqi Turkmen dialect, meaning salt and dates.

Naphtha, oil and asphalt was found in the town in the 18th century.

The city was populated by both Kurds and Turkmens in the 19th century, during the era of Ottoman Iraq. Claudius Rich visited the town in 1820 and stated that the town had a population of 50,000. In 1882 Major General Gerard visited the town and stated that the town had a bazaar, 300 houses, 100 regulars and 30 zaptiyehs.

John Gordon Lorimer visited Tuz Khurmatu in 1912, stating that the town consists of about 600 houses and around 3,000 inhabitants, and that some 20 households are Jews, with the rest being Turks who have been settled here from old.

The town was captured by United Kingdom in May 1918 and were met with joy from the locals. The local Hamawand tribe would offer their assistance to secure the area.

In 1925, Tuz Khurmatu’s population was entirely Turkmen, except for some Jewish families (35 out of 405 families).

40% of the population was Kurdish in the 1947 census.