Family name Қалдыбай (Қалдыбай 
) , all around the world, is an extremely rare surname. The surname Қалдыбай is habitual in Central Asia, particularly Kazakhstan, where it is a very rare surname. Likewise, Қалдыбай is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Қалдыбай | Kazakhstan |