John Blue may refer to:

• John Blue (ice hockey) (born 1966), American ice hockey player
• John Rinehart Blue (1905–1965), American politician, educator and merchant
• John S. Blue (1902–1942), US Naval officer
  • USS Blue (DD-744), US Navy ship named after John S. Blue
• Johnny Blue (song), Eurovision Song Contest entry for Germany
• Johnny Blue (album), 1981 Thorleifs album

• Blue John (disambiguation)

This disambiguation page lists articles about people with the same name.
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