Last name Бахтьяр (Bakhtiar 
, Bahtiar 
, Bakhtyar 
) , around the world, is a common cognomen. The surname Бахтьяр is habitual in Indonesia, where it is quite a common surname, Malaysia, and Afghanistan, where it is quite a rare surname. In absolute terms, the name is most common in Indonesia, Malaysia, and Pakistan. Likewise, Бахтьяр is the forename as well as the last name.