Family name Hayai (Hayai 
, Судзуки 
) , in all the world, is quite a rare cognomen. The surname Hayai is habitual in Japan, where it is quite a rare surname, Malaysia, where it is a very rare surname, and Russia. In absolute terms, it is commonest in Japan, India, and Russia. Much less frequently, Hayai is the forename as well as the last name.