Around the globe, Hadday (Hadday 
) is a very rare principally male, but very seldom female first name. The first name Hadday is habitual in Southern Asia, particularly India, where it is an extremely rare boy's name. More frequently, Hadday is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Hadday | Morocco, China, India, New Zealand, Nigeria |