Kanasubigi or Kana sybigi, as it is written in Bulgars' Greek inscriptions, was a title of the Bulgars.
The title khan for early Bulgar rulers is an assumed one, as only the form kanasubigi or "k(h)anasybigi" is attested in stone inscriptions. Historians presume that it includes the title khan in its archaic form kana, and there is a presumptive evidence suggesting that the latter title was indeed used in Bulgaria, e.g. the name of one of the Bulgars rulers Pagan occurs in Patriarch Nicephorus's so-called breviarium as Καμπαγάνος (Kampaganos), likely an erroneous rendition of the phrase "Kan Pagan". Among the proposed translations for the phrase kanasubigi as a whole are lord of the army, from the reconstructed Turkic phrase *sü begi, paralleling the attested Old Turkic sü baši, and, more recently, "(ruler) from God", from the Indo-European *su- and baga-, i.e. *su-baga (an equivallent of the Greek phrase ὁ ἐκ Θεοῦ ἄρχων, ho ek Theou archon, which is common in Bulgar inscriptions). This titulature presumably persisted until the Bulgars adopted Christianity. Some Bulgar inscriptions written in Greek and later in Slavonic refer to the Bulgarian ruler respectively with the Greek title archon or the Slavic title knyaz.
- Hanswilhelm Haefs, Das goldene Reich der Pamir-Bulgaren an Donau und Wardar (p. 120), ISBN 3-8334-2340-4
- Florin Curta, Roman Kovalev, “The” Other Europe in the Middle Ages: Avars, Bulgars, Khazars and Cumans ; [papers ... Presented in the Three Special Sessions at the 40th and 42nd Editions of the International Congress on Medieval Studies Held at Kalamazzo in 2005 and 2007], BRILL, 2008, p. 363, ISBN 9789004163898
- Източници за българската история . Fontes historiae bulgaricae, VI. Fontes graeci historiae Bulgaricae. БАН, София. p. 305 (in Byzantine Greek and Bulgarian). Also available online
- Veselin Beševliev, Prabylgarski epigrafski pametnici - 5
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- Sedlar, Jean W,. East Central Europe in the Middle Ages, 1000-1500, p. 46
- Manassias Chronicle, Vatican transcription, p. 145, see Battle of Pliska