Namesakes
Belgian Prime Ministers:
1 prime minister
Sylvain Van de Weyer 1845-1846 
Haitian Presidents:
1 president
(president) Sylvain Salnave 1867-1869
Notable Athletes:
2 soccer
(soccer) Philippe Senderos (a.k.a. Sylvain) 1985-
(soccer) Sylvain Gbohouo 1988-