Surname Гайяз (Гайяз 
) , worldwide, is an extremely rare cognomen. The family name Гайяз is habitual in Central Asia, particularly Kyrgyzstan, where it is a very rare surname. More frequently, Гайяз is the forename as well as the last name.
Кудашев, Акчурин, Ахметов, and Сайфетдинов