Sig is a given name. Notable people with the given name include:
Sig Andrusking (1913–1994), American football playerSig Arno (1895–1975), German-Jewish film actorSig Broskie (1911–1975), American baseball playerSig Gissler, American professorSig Grava (1934–2009), American scholarSig Gryska (1914–1994), American baseball playerSig Hansen (born 1966), American captain of the fishing vessel NorthwesternSig Haugdahl (1891–1970), Norwegian racing driverSig Herzig (1897–1985), American screenwriterSig Jakucki (1909–1979), American baseball playerSig Libowitz, American lawyerSig Mejdal (born 1965), American baseball statisticiansSig Rogich, Icelandic-American businessmanSig Ruman (1884–1967), German-American actorSig Shore (1919–2006), American film director