The Khakas, or Khakass (Khakas: Тадарлар), are a Turkic-speaking people, who live in Russia, in the republic of Khakassia in southern Siberia. They speak the Khakas language.

The origin of the Khakas people is disputed. Some scholars see them as descendants of the Yenisei Kirghiz, while others believe that, at the behest of the medieval Mongol Khans, the Yenisei Kirghiz migrated to Central Asia.

In the 17th century, the Khakas formed Khakassia in the middle of the lands of Yenisei Kirghiz, who at the time were vassals of a Mongolian ruler. The Russians arrived shortly after the Kirghiz left, and an inflow of Russian agragian settlers began. In the 1820s, gold mines started to be developed around Minusinsk, which became a regional industrial center.

During the 19th century, many Khakas accepted the Russian ways of life, and most were converted en masse to Russian Orthodox Christianity under threat of death by Russian soldiers. Shamanism with Buddhist influences, however, is still common, and many Christians practice Shamanism with Christianity. In Imperial Russia, the Khakas used to be known under other names, used mostly in historic contexts: Minusinsk Tatars (Russian: минуси́нские тата́ры), Abakan Tatars (абака́нские тата́ры), and Yenisei Turks.