Silliman is a surname. Notable people with the surname include:
Aldine Silliman Kieffer (1840–1904), American musicianBenjamin Silliman (1779–1864), American chemistBenjamin Silliman Jr. (1816–1885), American chemistGold Selleck Silliman (1732–1790), American attorney and Revolutionary War figureHorace Brinsmade Silliman (1825-1910), founder of Silliman UniversityRandolph Silliman Bourne (1886–1918), American writerRobert Hillyer a.k.a. Robert Silliman Hillyer (1895–1961), American poetRon Silliman (1946– ), American poet