Last name กัลปดี (Good Luck 
, กัลปดี 
) , in all the world, is a rare cognomen. The cognomen กัลปดี is habitual in Oman, where it is a rare surname, Saudi Arabia, and Thailand. Not in comparison with a country's population, this name is the most popular in Thailand, Saudi Arabia, and Nigeria. Likewise, กัลปดี is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Good Luck | Saudi Arabia, Egypt, Nigeria, Oman, Bangladesh |
| กัลปดี | Thailand |