Blue flag
Blue flag or Blue Flag may refer to: Sport and recreation Blue Flag beach, a beach or marina that meets certain quality standards Blue Flag, the flag of Chelsea F.C. Blue flag, a particular Flag#Swimming flags Blue flag, a particular Racing flags#Blue flag Botany Larger Blue Flag or Iris versicolor, a type of iris Slender Blue Flag or Iris prismatica, a type of iris Transport Blue flag, a particular Flag#Railway flags in railway use. Blue sign used by European waterways vessels passing on the starboard side Military Blue Flag (Israeli Air Force exercise), the name of an Israeli Air Force exercise Blue Flag (United States Air Force exercise), the name of a United States Air Force command and control exercise Other Blue Flag (manga), a manga series by Kaito.