Others
- George Campbell (minister) (1719–1796), Scottish Enlightenment philosopher, minister, theologian, and professor of divinity
- Sir George Campbell (Royal Navy officer) (1759–1821)
- George Campbell (1838–1915), Congregational minister, father of Alexander Petrie Campbell
- George Ashley Campbell (1870–1954), American electrical engineer
- George Campbell (murder victim) (died 1871), Canadian farmer who was murdered by his wife and her lover
- George Campbell Jr. (born 1945), President of The Cooper Union
- George Campbell (town marshal) (1850–1881), town marshal for El Paso, TX, one of four victims killed in the Four Dead in Five Seconds Gunfight
- George M. Campbell (1907–1942), United States Navy officer and Navy Cross recipient
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