Cognomen Lonis (Lonis 
) , globally, is quite a rare family name. The family name Lonis is characteristic of Greece, where it is a rare surname, Netherlands, and Algeria. Not in comparison with a country's population, it is the most numerous in Algeria, Italy, and the United States. Likewise, Lonis is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Lonis | Italy, Indonesia, United States, Democratic Republic of the Congo, Algeria |
| giuseppe antonio lonis Italian sculptor (1720-1805), IT (b. 1720) |
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| godfried lonis NL (b. 1916) |
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| raoul lonis French historian, FR (b. 1933) |
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| lonis calero Sportsperson, CR (b. 1998) |
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