is a common English name and surname:
may also refer to:
- John (prostitution) , a slang term for a person who patronizes prostitutes
- John (bookmaker) , the Indian bookmaker who was involved in a betting controversy with Australian cricketers Mark Waugh and Shane Warne
- Tropical Storm John , tropical cyclones appearing in the Eastern Pacific Ocean
- "John" (1988), a single from French singer Desireless's album '' François ''
- "John" is American slang for a Toilet
- John The Ripper , a password strength checking program (the executable program is simply "john")
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