Last name ماتسوي (Matsui 
, ماتسوي) , across the world, is quite a rare cognomen. The cognomen ماتسوي is characteristic of Singapore, where it is quite a rare surname, Japan, and Hong Kong, where it is a rare surname. Not in comparison with a country's population, it most frequently occurs in Japan, Brazil, and the United States. Also, ماتسوي is the forename as well as the last name.