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Worldwide, シド (Sid
, Cid
, Syd
) is a common predominantly boy's, but very seldom girly first name. The given name シド is characteristic of Algeria, where it is quite a common predominantly boy's, but scarcely feminine name, Mauritania, where it is quite a common gender-neutral name, and Mauritius, where it is quite a rare masculine name. Measured by absolute frequency, this name is the most popular in Algeria, Brazil, and the United States. Likewise, シド is the last name as well as the forename.
シド 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.