Family name יאיוי (Yayoi 
, יאיוי 
) , throughout the world, is a rare cognomen. The family name יאיוי is characteristic of Japan, where it is a rare surname, Malaysia, where it is a very rare surname, and Mexico. Measured by absolute frequency, it most frequently occurs in Japan, China, and Mexico. Much more frequently, יאיוי is the forename as well as the last name.