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Globally, Riis (ريس
, 里斯
, Riis
, and others...) is quite a rare primarily masculine, but very seldom girly first name. The first name Riis is characteristic of Western Asia, particularly Syria, where it is a rare male name, Iraq, and Saudi Arabia. Not in comparison with a country's population, the name is most common in Iraq, China, and Saudi Arabia. More frequently, Riis is the last name as well as the forename.
Riis is also a name for the fictitious and mythical characters: Rhys Williams , the fictional character of Torchwood; Rhys Michael Haldane and Rhys Lawson , the character from Australian soap opera "Neighbours".