Last name Styuart (Styuart 
) , throughout the world, is a rare surname. The family name Styuart is characteristic of Bulgaria, where it is quite a rare surname, Kazakhstan, where it is a very rare surname, and Ukraine, where it is an extremely rare surname. In absolute terms, it is commonest in Bulgaria, Kazakhstan, and Russia. Much less frequently, Styuart is the forename as well as the last name.