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Cognomen Rasu (Rasu , Расу , راسو ) , all over the world, is quite a common surname. The cognomen Rasu is characteristic of Western Asia, particularly Qatar, where it is quite a rare surname, United Arab Emirates, and Oman. Measured by absolute frequency, the name is most common in Bangladesh, India, and Indonesia. Likewise, Rasu is the forename as well as the last name.