Around the world, Leonce (Leonce 
, Léonce 
, ليونس 
) is a common epicene first name. The given name Leonce is habitual in Sub-Saharan Africa, particularly Cameroon, where it is quite a rare unisex name, the Democratic Republic of the Congo, and Tanzania, where it is quite a rare boy's name. Very seldom, Leonce is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Leonce | Ivory Coast, Tanzania, Madagascar, Democratic Republic of the Congo, Cameroon |
| Léonce | Ivory Coast, Madagascar, Benin, Democratic Republic of the Congo, Cameroon |
| ليونس | Iraq |
| Onça | Brazil, Portugal |
Leonce is also a name for the fictitious and mythical characters: .
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leonce French actor and singer, FR (b. 1820) |
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leonce von könneritz German amtshauptmann and jurist (1835-1890), DE (b. 1835) |
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leonce vieljeux French businessman and resistance member (1865-1944), FR (b. 1865) |
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| leonce lex French archivist (1859-1926), FR (b. 1859) |
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| leonce lagarde French colonial administrator (1860-1936), FR (b. 1860) |
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| leonce de grandmaison French Catholic priest, FR (b. 1868) |
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| leonce pelletier (b. 1869) |
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| leonce bourliaguet French writer (1895-1965), FR (b. 1895) |
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| leonce dekeijser BE (b. 1924) |
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| leonce bekemans scholar (b. 1950) |
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| leonce raphael agbodjelou Beninese photographer, BJ (b. 1965) |
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| leonce de naxia Roman Catholic bishop |
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| leonce de douzon, marquis de douzon Peerage person ID=352227 |
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| leonce de rimini bishop of the Roman Catholic Church |
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| leonce sekama Rwandan swimmer, RW (b. 1980) |
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