Last name 新吾 (Shingo 
, 新吾 ) , worldwide, is quite a rare cognomen. The family name 新吾 is characteristic of Namibia, where it is quite a rare surname, Singapore, where it is a rare surname, and Japan. Not in comparison with a country's population, it is commonest in China, Japan, and Tanzania. Likewise, 新吾 is the forename as well as the last name.