John Sainsbury may refer to:

• John James Sainsbury (1844–1928), co-founder of the major UK supermarket chain Sainsbury's
• John Benjamin Sainsbury (1871–1956), eldest son of John James Sainsbury and Sainsbury's chairman 1928–1956
• John Sainsbury, Baron Sainsbury of Preston Candover (born 1927), great-grandson of John James Sainsbury and Sainsbury's chairman 1969–1992
• John Sainsbury (cricketer) (1927–2004), cricketer for Somerset

• Football at the 1982 Asian Games–Squads
• Football at the 1982 Central American and Caribbean Games
• Football at the 1985 Maccabiah Games
• Football at the 1985 Summer Universiade
• Football at the 1986 Asian Games – Squads
• Football at the 1986 Central American and Caribbean Games
• Football at the 1987 All-Africa Games
• Football at the 1987 Summer Universiade
• Football at the 1988 Summer Olympics - Group A
• Football at the 1988 Summer Olympics - Group B
• Football at the 1988 Summer Olympics - Group C
• Football at the 1988 Summer Olympics - Group D
• Football at the 1988 Summer Olympics - Knockout stage
• Football at the 1988 Summer Olympics – Matches Group A
• Football at the 1988 Summer Olympics – Matches Group B
• Football at the 1988 Summer Olympics – Matches Group C
• Football at the 1988 Summer Olympics – Matches Group D
• Football at the 1988 Summer Olympics – Matches knockout stage
• Football at the 1990 Asian Games – Squads
• Football at the 1991 All-Africa Games
• Football at the 1991 European Youth Olympic Days
• Football at the 1991 Summer Universiade
• Football at the 1992 Summer Olympics – Men's qualification
• Football at the 1993 Summer Universiade
• Football at the 1994 Asian Games – Squads