Siberian Tatars or Sybyrs/Sibirs are the indigenous Turkic-speaking population of the forests and steppes of Western Siberia, originating in areas stretching from somewhat east of the Ural Mountains to the Yenisey River in Russia. The Siberian Tatars call themselves Yerle Qalıq, to distinguish themselves from more recent Volga Tatar immigrants to the region.

The Tatars, formerly also spelt Tartars, is an umbrella term for different Turkic ethnic groups bearing the name "Tatar" across Eastern Europe and Asia. Initially, the ethnonym Tatar possibly referred to the Tatar confederation. That confederation was eventually incorporated into the Mongol Empire when Genghis Khan unified the various steppe tribes. Historically, the term Tatars was applied to anyone originating from the vast Northern and Central Asian landmass then known as Tartary, a term which was also conflated with the Mongol Empire itself. More recently, however, the term has come to refer more narrowly to related ethnic groups who refer to themselves as Tatars or who speak languages that are commonly referred to as Tatar.