Kotrag
| Kotrag | |
|---|---|
| Reign | 665 – around 700 | 
| Died | around 700 | 
| House | Dulo | 
| Father | Kubrat | 
| Religion | Tengrism | 
Kotrag was according to Nikephoros I of Constantinople a son of Kubrat of the Dulo clan of Bulgars. Following the death of his father, he began to extend the influence of his Bulgars to the Volga River. He is remembered as the founder of Volga Bulgaria.