In the world, ชนายุ (ชนายุ 
) is a very rare dominantly masculine, but seldom feminine first name. The given name ชนายุ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare mostly male, but uncommonly feminine name.
| VARIANT | COUNTRY |
|---|---|
| ชนายุ | Thailand |
แสงเจริญ, and งามประดิษฐ์