Across the world, Костин (Costin 
, Kostin , Костин 
) is quite a common principally boy's, but very infrequently female forename. The given name Костин is habitual in Romania, where it is quite a common primarily male, but scarcely feminine name, Moldova, where it is quite a rare boy's name, and the Democratic Republic of the Congo, where it is a rare masculine name. In absolute terms, the name is most common in Romania, the Democratic Republic of the Congo, and India. More frequently, Костин is the last name as well as the forename.