Reg or Reginald Parker may refer to:
Reg Parker (footballer) (1921–1997), Welsh footballer Reg Parker (rugby league) (1927–2014), English rugby league footballer Reginald Parker (footballer) (born 1902), English footballer Reginald Parker (sport shooter) (born 1916), Australian sport shooter Reginald John Marsden Parker (1881–1948), Lieutenant Governor of Saskatchewan
See also Reg Park (1928–2007), English bodybuilder and actor