Other
- John Hansen (bodybuilder) (born 1963), two-time Natural Mr. Universe
- John Hansen (rower) (born 1938), Danish Olympic rower
- John Hansen (voice actor), American voice actor
- John R. Hansen (1901–1974), U.S. Representative from Iowa
- John William Hansen (born 1945), New Zealand High Court Judge
- John H.L. Hansen (born 1959), American speech technologist
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