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Around the world, Haijun (Haijun , 海俊 , 海钧 ) is a common predominantly boy's, but very infrequently female first name. The first name Haijun is characteristic of China, where it is quite a rare primarily male, but very seldom female name, Taiwan, where it is quite a rare boy's name, and Singapore, where it is a rare masculine name. Not in comparison with a country's population, it is the most numerous in China, India, and Taiwan. Much less frequently, Haijun is the last name as well as the forename.