Surname Niyo (Niyo 
, นิยอ 
) , across the world, is quite a common last name. The family name Niyo is habitual in Japan, where it is quite a rare surname, Burundi, and Rwanda. Not in comparison with a country's population, it most frequently occurs in Japan, the Democratic Republic of the Congo, and Burundi. Likewise, Niyo is the forename as well as the last name.