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Last name Riku (Riku , ريكو , リク ) , all over the world, is a common cognomen. The cognomen Riku is characteristic of Japan, where it is quite a common surname, Albania, where it is quite a rare surname, and Egypt. In absolute terms, this name is the most popular in Japan, Egypt, and Bangladesh. Also, Riku is the forename as well as the last name.
Ki, Kanwar, Kanvar, Kumari, Pandey, Paswan, Prasad, Thakur, Mattila, Mäkelä, Suzuki, Turunen, Salminen, Saarinen, Korhonen, Koskinen, Rantanen, Lehtonen, Niemelä, Heinonen, Virtanen, Mäkinen, Sharma, Mishra, Mondal, Sah, Ato, Bai, Ram, Ray, Das, Jha, Nen, Salo, Sinh, Devi, Saito, Singh, Kumar, Gupta, Ghosh, Laine, Niemi, Edevi, Yadav, Mandal, Järvinen, and Hämäläinen