John Greig is a Scottish footballer.
John Greig may also refer to:
John Greig (basketball) (born 1961), NBA basketball player J. G. Greig (1871–1958), English cricketer John Greig (mathematician) (1759–1819), English mathematician John Greig (politician) (1779–1858), Representative from New York John Greig (bishop) (1925–1938), Bishop of Gibraltar then Guildford John Russell Greig (1889–1963), Scottish veterinarian John Keiller Greig (1881–1971), British figure skater John Greig (minister), 17th century minister
See also John Gregg (disambiguation)