Surname グレイ (Grey 
, Gray , Grae 
, among others...) , in the entire world, is a widespread family name. The cognomen グレイ is habitual in Jamaica, where it is a common surname, Jersey, and Bahamas (explore the name in all countries). Measured by absolute frequency, this name is the most popular in the United States, the United Kingdom, and Australia. Very seldom, グレイ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Grey, Gray | Australia, Canada, Jamaica, United Kingdom, United States |
| Grae | Australia, Canada, United Kingdom, United States, Ireland |
| Graye | Australia, Democratic Republic of the Congo, Canada, United Kingdom, United States |
| グレイ | Japan |