Surname Bakhtyyar (Бахтияр 
, Бахтыяр 
, Бахтыиар ) , in all the world, is quite a common cognomen. The last name Bakhtyyar is characteristic of Kyrgyzstan, where it is quite a common surname, Azerbaijan, where it is quite a rare surname, and Turkmenistan. Measured by absolute frequency, it is the most numerous in Kyrgyzstan, Azerbaijan, and Uzbekistan. More prevalently, Bakhtyyar is the forename as well as the last name.