>
Surname Maruyama (博 , マルヤマ , Maruyama ) , throughout the world, is a widespread cognomen. The surname Maruyama is characteristic of China, where it is quite a common surname, Japan, where it is quite a rare surname, and Singapore, where it is a rare surname. Measured by absolute frequency, it is the most numerous in China, Japan, and Brazil. More frequently, Maruyama is the forename as well as the last name.