Other
- David Campbell (admiral) (born 1945), Australian Rear Admiral, Deputy Chief of Naval Staff, 1994–1995
- David Campbell (British Army officer) (1896–1936), Major-General, jockey, Governor of Malta
- David Campbell (poet) (1915–1979), Australian poet
- David George Campbell (born 1949), American professor and writer
- David Campbell (footballer) (born 1965), Northern Irish footballer
- David Campbell (Ninja Warrior) (born 1977), American athlete
- David James Campbell (born 1983), Australian advertising executive
- David E. Campbell, American sound engineer
- David P. Campbell, American psychologist
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