Cognomen Sidey (Sidey 
, 赛迪 
, Сидей 
) , across the world, is a rare surname. The surname Sidey is characteristic of New Zealand, where it is a rare surname, the United Kingdom, and Australia. In absolute terms, this name is the most popular in the United Kingdom, the United States, and Russia. Likewise, Sidey is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sidey | Canada, Costa Rica, United Kingdom, United States, Mali |
| 赛迪 | China |
| Сидей | Ukraine, Russia |
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thomas sidey New Zealand politician, NZ (b. 1863) |
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thomas kay stuart sidey New Zealand mayor and lawyer (1908-2007), NZ (b. 1908) |
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| david james sidey author of 1931 masters thesis at Massey University titled Defects of New Zealand wools (b. 1902) |
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| norman sidey association football player (1907-1969), GB (b. 1907) |
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| hugh sidey American journalist, US (b. 1927) |
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jenni sidey-gibbons Canadian astronaut, engineer and lecturer, CA (b. 1988) |
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| john sidey (b. 1933) |
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| jennifer anne sidey (1944-1954) (b. 1944) |
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| ian macnaughton sidey (born 1947) (b. 1947) |
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| jamie macnaughton sidey (born 1975) (b. 1975) |
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| guy xavier sidey (born 1979) (b. 1979) |
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| jane sidey Peerage person ID=644603 |
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| james walker sidey Peerage person ID=247698 |
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| vasyl sidey researcher |
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| charles langford sidey (died 1993) |
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