Oak leaf or Oakleaf may refer to:

Biology

  • the leaf of an oak
  • oak leaf lettuce, from the Lactuca sativa group
  • Any member of the butterfly genus Kallima
  • The species Kallima knyvetti

Military

  • Oak leaf cluster, a U.S. military decoration
  • A bronze oak leaf device, used to signify a Mention in Despatches in Commonwealth militaries
  • A silver oak leaf device, used to signify the award of the King's Commendation for Valuable Service in Commonwealth militaries
  • Oak leaves awarded to holders of some categories of the German Iron Cross and the Knight's Cross of the Iron Cross
  • Golden oak leaf, insignia of rank of Major (United States)
  • Golden oak leaf, insignia of rank of Lieutenant commander (United States)
  • Silver oak leaf, insignia of rank of Commander (United States)
  • Silver oak leaf, insignia of rank of Lieutenant colonel (United States)
  • Golden oak leaf, insignia of the United States Navy Supply Corps

Geography

  • County Londonderry, Northern Ireland, nicknamed 'the Oak Leaf County'
  • Oak Leaf, Texas, a city
  • Oakleaf Lake, a lake in Minnesota

Others

  • RFA Oakleaf, Royal Fleet Auxiliary ship names
  • Oakleaf Brewery, a brewery in England
  • Oak Leaf (house), a historic home in New York