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Last name Sirs (瑟斯 , Sirs , سيرز) , globally, is a rare family name. The surname Sirs is characteristic of Latvia, where it is a rare surname, the United Kingdom, where it is a very rare surname, and New Zealand. Measured by absolute frequency, this name is the most popular in the United Kingdom, India, and the United States. Likewise, Sirs is the forename as well as the last name.