Last name Mugui (木贵 
, 木桂 , Mugui 
) , across the world, is a rare family name. The last name Mugui is habitual in China, where it is a very rare surname, Spain, where it is an extremely rare surname, and Venezuela. In absolute terms, this name is the most popular in China, Spain, and Brazil. More frequently, Mugui is the forename as well as the last name.