Family name Rigui (日贵 
, 日桂 , Rigui 
) , in the world, is a rare cognomen. The cognomen Rigui is habitual in Morocco, where it is a rare surname, Algeria, where it is a very rare surname, and Brazil. Not in comparison with a country's population, it is the most numerous in China, Brazil, and Morocco. More frequently, Rigui is the forename as well as the last name.