Cognomen Jysi (Jysi 
) , around the world, is an extremely rare family name. The surname Jysi is habitual in Russia, where it is an extremely rare surname, and India. Much less frequently, Jysi is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Jysi | Russia, India, United States |
| jysi liro Finnish botanist (1872-1943), FI (b. 1872) |
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