Family name Kyuin (Kyuin , 규인 ) , all over the world, is an extremely rare cognomen. Much more frequently, Kyuin is the forename as well as the last name.
Gyuin, and Кюйн
Yi, Shylla, Ishii, Imai, Jung, Park, Case, Choi, Shunkai, Chon, Shin, Lim, Lee, Kim, Ban, Cho, Sim, Shim, and Goodson
, 규인 
) , all over the world, is an extremely rare cognomen. Much more frequently, Kyuin is the forename as well as the last name.