Family name Haldys (Haldys 
) , across the world, is a very rare cognomen. The last name Haldys is habitual in Poland, where it is a very rare surname, France, where it is an extremely rare surname, and the United Kingdom. More frequently, Haldys is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Haldys | France, Democratic Republic of the Congo, United Kingdom, United States, Poland |