The Oghuz Turks were a western Turkic people who spoke the Oghuz branch of the Turkic language family. In the 8th century, they formed a tribal confederation conventionally named the Oghuz Yabgu State in Central Asia. Today, much of the populations of Turkey, Azerbaijan and Turkmenistan are descendants of Oghuz Turks. Byzantine sources call them Uzes. The term Oghuz was gradually supplanted by the terms Turkmen and Turcoman by 13th century.

The Pechenegs or Patzinaks were a semi-nomadic Turkic people from Central Asia who spoke the Pecheneg language. In the 9th and 10th centuries, the Pechenegs controlled much of the steppes of southeast Europe and the Crimean Peninsula. In the 9th century the Pechenegs began a period of wars against Kievan Rus', and for more than two centuries launched raids into the lands of Rus', which sometimes escalated into full-scale wars.