In the entire world, Jean-Sylvain (Jean-Sylvain 
) is a rare male first name. The first name Jean-Sylvain is habitual in France, where it is a rare masculine name, and the Democratic Republic of the Congo. Parts of the name also exists independently as a first name Jean, and a first name Sylvain.
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| Jean-Sylvain | Canada, France, Democratic Republic of the Congo, United States |
| jean-sylvain cartaud French architect, FR (b. 1675) |
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| jean-sylvain raynaud French politician, FR (b. 1818) |
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| jean-sylvain hermida researcher (ORCID 0000-0001-9276-2886) |
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| jean-sylvain caillou FR (b. 1974) |
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| jean-sylvain minssen |
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| jean-sylvain le gouic |
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Fau, Roveri, Godelu, Girard, Landry, Loezic, Minssen, Alberti, Campeau, Caillou, Bragard, Pigelet, Jacquet, Chavanne, Bergeron, Demelier, Gouranton, Lenepveu, Tremblay, Frossard, Fourquet, Bellengier, Philys, Piniau, Ponroy, Proulx, Bons, Bing, Prot, Fiol, Oury, Weil, Marre, Masse, Morel, Sodji, Bourgenot, Cabot, Barel, Boige, Kassi, René, Labbe, Bailly, Beaune, Boudoy, Paszek, Perrig, Barbe, and Marchessou