Last name リュシ (Lussi 
, リュシ) , in all the world, is quite a rare cognomen. The last name リュシ is characteristic of Switzerland, where it is quite a common surname, Austria, where it is a rare surname, and New Zealand. Measured by absolute frequency, it is commonest in Switzerland, Indonesia, and Italy. Also, リュシ is the forename as well as the last name.