Last name Lyuis (Lyuis 
, Льюис 
, Люис 
) , in all the world, is a rare cognomen. The cognomen Lyuis is habitual in Bulgaria, where it is quite a rare surname, Armenia, where it is a rare surname, and Russia, where it is a very rare surname. Measured by absolute frequency, this name is the most popular in Bulgaria, Russia, and India. Very seldom, Lyuis is the forename as well as the last name.