Family name Ký (Ký 
) , in the entire world, is a rare cognomen. The last name Ký is characteristic of Egypt, where it is a rare surname, Vietnam, and Myanmar. Much less frequently, Ký is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ký | Vietnam, Egypt, Myanmar |
| trương minh ký Vietnamese writer (b. 1855) |
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| hoàng châu ký playwright, VN (b. 1921) |
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| bé ký US (b. 1938) |
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