Surname Реико (Reiko 
, Реико 
) , all over the world, is quite a rare cognomen. The surname Реико is characteristic of Malaysia, where it is a rare surname, Japan, and Israel. In absolute terms, it is commonest in Japan, China, and Malaysia. Much more prevalently, Реико is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Reiko | Japan, Germany, China, United States, Brazil |
| Реико | Russia |