Other
- Campbell Soup Company, well-known American producer of canned soups and related products
- P and A Campbell, the dominant excursion-steamer operator in the Bristol Channel
- Campbell Diagram, a plot of natural frequency versus Rotor Speed used to determine critical speeds in rotordynamics
- Campbell College, a school in Northern Ireland
- Campbell (lunar crater)
- Campbell Brown, American television news reporter and anchor
- Campbell Saunders, fictional character in Degrassi
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