All around the world, โกสัย (Kosai 
, โกสัย ) is a common predominantly boy's, but very seldom female first name. The forename โกสัย is characteristic of Japan, where it is quite a common boy's name, Tunisia, where it is quite a rare male name, and Syria. Not in comparison with a country's population, it is the most numerous in Japan, India, and Algeria. Much less frequently, โกสัย is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Kosai | Myanmar, Japan, Algeria, India, Thailand |
| โกสัย | Thailand |