Cognomen Масаки (Masaki 
, Terusato , 正木 , and others...) , throughout the world, is a common family name. The cognomen Масаки is characteristic of Tanzania, where it is quite a rare surname, Kenya, and Japan. Measured by absolute frequency, the name is most common in Tanzania, Japan, and China. Likewise, Масаки is the forename as well as the last name.