John Sainsbury
John Sainsbury may refer to:
- John James Sainsbury, co-founder of the major UK supermarket chain Sainsbury's
- John Benjamin Sainsbury, eldest son of John James Sainsbury and Sainsbury's chairman 1928–1956
- John Sainsbury, Baron Sainsbury of Preston Candover, great-grandson of John James Sainsbury and Sainsbury's chairman 1969–1992
- John Sainsbury (cricketer), cricketer for Somerset