Last name Demei (德梅 
, 德美 , Demei 
) , throughout the world, is quite a rare cognomen. The family name Demei is characteristic of China, where it is a rare surname, Netherlands, where it is a very rare surname, and Italy. Measured by absolute frequency, it is commonest in China, the United States, and Italy. More prevalently, Demei is the forename as well as the last name.