Worldwide, Lyas (Lyas 
, Лясь 
) is quite a rare predominantly male, but scarcely female first name. The first name Lyas is habitual in Algeria, where it is quite a common masculine name, Tunisia, where it is a rare masculine name, and France, where it is a very rare masculine name. In absolute terms, it is the most numerous in Algeria, India, and France. Much less frequently, Lyas is the last name as well as the forename.