Family name Jallai (Jallai 
) , globally, is a rare last name. The cognomen Jallai is characteristic of Estonia, where it is quite a common surname, Trinidad and Tobago, where it is quite a rare surname, and Sweden, where it is a rare surname. Very seldom, Jallai is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Jallai | Trinidad and Tobago, Estonia, United States, Sweden, Malaysia |
| andres jallai Swedish writer, SE (b. 1960) |
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| tarmo jallai Estonian athlete, EE (b. 1979) |
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| kerttu jallai Estonian basketballer, EE |
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| erkki jallai Estonian cross-country skier, EE (b. 1981) |
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