Last name কৌশিক (Koushik 
, Kaushik 
, কৌশিক ) , across the world, is a widespread surname. The surname কৌশিক is habitual in India, where it is quite a common surname, United Arab Emirates, where it is quite a rare surname, and Cyprus. Not in comparison with a country's population, this name is the most popular in India, Bangladesh, and the United States. Also, কৌশিক is the forename as well as the last name.