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J1, J01, J.I, J-I or J-1 may refer to:




Other vehicles[edit]

  • J-I rocket, a Japanese solid rocket expendable launch vehicle
  • J1 type submarine, a World War II Imperial Japanese Navy cruiser submarines class
  • HMS J1, a World War I British submarine

In arts and entertainment[edit]

In mathematics and science[edit]

Other uses[edit]

  • J-1 visa, a type of U.S. visa for exchange visitors
  • The J1 League, the top division of Japanese association football

See also[edit]