Charles or Charlie King may refer to:
- Charles King (Columbia University president) (1789–1867), American academic, politician and newspaper editor
- Charles Ray King (1813–1901), American physician and author, son of John Alsop King, grandson of Rufus King
- Charles William King (1818–1888), English writer and collector of gems
- Charles Glen King (1896–1988), American biochemist
- Charles King, pen name of E. Lee Spence (born 1947), American author/editor of non-fiction
- Charles King (professor of international affairs) (born 1967), American academic and author
- Charles King (English cricketer) (1832–1872), English cricketer
- Charles King (New Zealand cricketer) (1847–1917), New Zealand cricketer
- Charles King (footballer) (1860–1928), English footballer; played in 1880 FA Cup Final
- Charles King (athlete) (1880–1958), American Olympic silver medalist
- Charles King (cyclist) (1911–2001), British Olympic cyclist
- Charlie King (baseball) (1912–1969), American baseball player
- Charlie King (Australian footballer) (1926–2007), Australian rules footballer for Geelong
- Charlie King (sports broadcaster), first indigenous Australian sports commentator at Olympic Games
- Charlie King (footballer, born 1979), Scottish footballer