Last name كالدر (Calder 
, كالدر) , around the world, is a common family name. The family name كالدر is characteristic of New Zealand, where it is quite a common surname, Jamaica, and Australia, where it is quite a rare surname. In absolute terms, the name is most common in the United States, the United Kingdom, and Canada. Much less frequently, كالدر is the forename as well as the last name.