Family name Kỳ (Kỳ 
, キ 
) , in the world, is quite a rare surname. The cognomen Kỳ is habitual in Vietnam, where it is quite a rare surname, and Japan. Likewise, Kỳ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kỳ | Vietnam, United States |
| キ | Japan |
| bùi công kỳ VN (b. 1919) |
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| châu kỳ VN (b. 1923) |
|
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| minh kỳ VN (b. 1930) |
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| huỳnh thế kỳ Vietnamese politician, VN (b. 1956) |
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| gia kỳ VN (b. 1996) |
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