Last name Giias (Гияс 
, Гииас , Giias 
) , in the world, is a very rare surname. The family name Giias is habitual in Kyrgyzstan, where it is a rare surname, Georgia, where it is a very rare surname, and Israel. Measured by absolute frequency, the name is most common in Kyrgyzstan, Russia, and Georgia. More prevalently, Giias is the forename as well as the last name.