In the world, 시우 (Siwoo 
, 시우 , Si-U 
) is quite a rare gender-neutral given name. The forename 시우 is characteristic of Eastern Asia, particularly South Korea, where it is quite a rare unisex name.
| 이시우 South Korean military personnel, KR (b. 1948) |
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| 송시우 South Korean writer, KR |
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| 안시우 South Korean comedian, KR (b. 1983) |
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| 송시우 South Korean footballer, KR (b. 1993) |
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| 김시우 South Korean association football player, KR (b. 1994) |
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| 이시우 South Korean volleyball player, KR (b. 1994) |
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| 김시우 South Korean professional golfer, KR (b. 1995) |
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| 박시우 South Korean actress, KR (b. 1997) |
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| 김시우 South Korean association football player, KR (b. 1997) |
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| 이시우 South Korean model and actress, KR (b. 1997) |
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| 이시우 South Korean actor, KR (b. 1999) |
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| 송시우 South Korean figure skater |
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