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Around the world, Cassin (Kosen , Cassin , 卡森 ) is a common male given name. The first name Cassin is habitual in Japan, where it is quite a common masculine name, Italy, where it is a very rare male name, and Nigeria, where it is a very rare epicene name. In absolute terms, it is the most numerous in Japan, India, and Nigeria. Also, Cassin is the last name as well as the forename.
Cassin is also a name for the fictitious and mythical characters: Ray Palmer , the fictional character from the television series Arrow and Legends of Tomorrow, The Flash; Carson Beckett , the fictional human, Stargate Atlantis and Carson Drew , character in Nancy Drew Mystery Stories.