Justin King
- Born
- 17 May 1961 (65 years)
- Place of birth
- Stepney, East London, England, UK
- Gender
- Male
Justin Matthew King, CBE is an English businessman, who served as the CEO of J Sainsbury plc, parent company of the supermarket chain Sainsbury's, for 10 years before stepping down in July 2014. King was previously Director of Food at Marks and Spencer and has held senior positions at Asda.