William, Will, Bill or Billy Griffiths may refer to:
Sports Billy Griffiths (footballer, born 1876), (1876–1946), English footballer Bill Griffiths (footballer, born 1879) (1879–1928), Australian rules footballer Bill Griffiths (footballer, born 1896) (1896–1970), Australian rules footballer Bill Griffiths (footballer, born 1921) (1921-1964), English footballer, see List of Bury F.C. players William Griffiths (field hockey) (1922–2010), British Olympic hockey player William Griffiths (boxer) (born 1932), Australian Olympic boxer Will Griffiths (rugby union) (born 1998), Welsh rugby union player
Others William Griffiths (VC) (1841–1879), Irish recipient of the Victoria Cross William Griffiths (politician) (1912–1973), British politician Hugh Griffiths, Baron Griffiths (William Hugh Griffiths, 1923–2015), British soldier, cricketer, judge and life peer William Garonwy Griffiths (born 1955), American author Bill Griffiths (poet) (1948–2007), British poet and scholar Billy Griffiths (writer), Australian historian and writer
See also Billy Griffith (Stewart Cathie Griffith, 1914–1993), cricketer and cricket administrator Robert William Griffiths (1896–1962), Welsh farmer and businessman William Griffith (disambiguation)