- Source: Sid Williams (disambiguation)
Sid Williams (born 1942) is a former American football linebacker and diplomat.
Sid, Syd, Sidney or Sydney Williams may also refer to:
Sidney Williams (author) (born 1962), American author
Sidney Williams (baseball) (1914–2006), American baseball pitcher
Sid E. Williams (1928–2012), American chiropractor and founder of Life University
Sid Williams (footballer) (1919–2003), English association footballer for Bristol City from 1937 to 1952
Sid Williams (rugby league), Australian rugby footballer who played in the 1960s and 1979s
Syd Williams (1918–1976), Welsh rugby union and rugby league footballer
Sid Williams Theatre is the major performance theatre in the Comox Valley, Courtenay, British Columbia, Canada
See also
Sid Williams Richardson
Sidney Williamson