The Old Turkic name of the Göktürks was Türük, Kök Türük, or Türk. They were known in Middle Chinese historical sources as the tɦutkyat (Chinese:突厥; pinyin:Tūjué). According to Chinese sources, the meaning of the word Tujue was "combat helmet" (Chinese:兜鍪; pinyin:Dōumóu; Wade–Giles:Tou1-mou2), reportedly because the shape of the Altai Mountains where they lived, was similar to a combat helmet.
The name Göktürk is said to mean "Celestial Turks". This is consistent with "the cult of heavenly ordained rule" which was a recurrent element of Altaic political culture and as such may have been imbibed by the Göktürks from their predecessors in Mongolia. The name of the ruling Ashina clan may derive from the Khotanese Saka term for "deep blue", āššɪna.