Family name ליסאק (Lussac 
, ליסאק 
) , in the world, is a rare last name. The cognomen ליסאק is habitual in France, where it is a rare surname, Hong Kong, and Israel, where it is a very rare surname. Measured by absolute frequency, this name is the most popular in France, Brazil, and Hong Kong. Much less frequently, ליסאק is the forename as well as the last name.