Last name לוייס (Louys 
, לוייס 
) , across the world, is a rare surname. The cognomen לוייס is habitual in Cayman Islands, where it is quite a rare surname, Cyprus, and Belgium, where it is a rare surname. Measured by absolute frequency, it is the most numerous in France, Belgium, and Cyprus. Much less frequently, לוייס is the forename as well as the last name.