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In all the world, סיד (Sid , Cid , Syd ) is a common predominantly boy's, but very infrequently feminine forename. The first name סיד is characteristic of Algeria, where it is quite a common principally boy's, but very seldom female name, Mauritania, where it is quite a common epicene name, and Mauritius, where it is quite a rare male name. Not in comparison with a country's population, this name is the most popular in Algeria, Brazil, and the United States. Likewise, סיד is the last name as well as the forename.
סיד is also a prevalent name for the fictitious and mythical characters: Sid , the Ice Age character, Ice Age: Collision Course; Sid Jenkins , the character in Skins; Sid Phillips , the Toy Story character; Sid Hammerback , the fictional character, CSI: NY and Cid Highwind , the playable character from Final Fantasy VII, and in many other works.