A leaf is an organ of a vascular plant.

Leaf or Leaves may also refer to:

• Leaf, Georgia, United States, an unincorporated community
• Leaf, Mississippi, United States, an unincorporated community
• Leaf River (disambiguation), several rivers in North America

• Leaf (surname), a list of people with the family name Leaf or Leafe
• Leaf Daniell (1877–1913), British fencer, silver medalist in the 1908 Olympics
• Leaf Huang, Taiwanese-born American biophysicist
• Pine Leaf, possibly the same person as Woman Chief, a female chief of the Crow tribe

• Leaf (Dutch band), a pop band formed in 2005
• Leaves (Icelandic band), a five-piece alternative rock band formed in 2001
• "Leaves" (Spaced), a television episode
• The Leaves, a 1960s American garage band
• A Leaf, a classical piece written by Paul McCartney, with assistance from John Fraser
• The Leaf Label, an independent record label based in Leeds, United Kingdom
• "Leaves", a children's story from The Railway Series book Gordon the Big Engine by the Reverend Wilbert Awdry
• Leaves, a devotional magazine published by the Missionary Order of Mariannhill in the United States

• Leaf (Israeli company), a photography company
• Leaf (Japanese company), a visual novel studio
• Leaf (payment platform)
• Leading Edge Air Foils, also called "LEAF", an American aircraft parts supplier
• Leaf Books, a small Wales-based publisher
• Leaf Brands, an American candy company
• Leaf International, a Dutch-Swedish confectionery company
• Nissan Leaf, an electric car

• Leaf (books), half of a sheet, the sheet’s center being bound at the spine, such that each half may have a page on either or both sides
• Metal leaf, a thin metal foil, e.g.:
  • Gold leaf

• Leaf, in foliation mathematics
• Large European Acoustic Facility, a sound facility operated by the European Space Agency
• Law Enforcement Access Field, as used in the Clipper chip encryption device
• Leaf node, part of a tree data structure in computer science
• Leaf object, an object represented by an end node in a tree structure
• LEAF Project, a collection of Linux distributions dedicated to routing
• Leaf spring, a common type of vehicle suspension
• LEAF Consortium is an association of partner entities intent on bringing interoperability to the Access Control and Identity Credentials market and beyond.

• LEAF Community Arts (LEAF), an arts organization and festival in Black Mountain, North Carolina
• Leaf-class tanker, a class of support tanker of the British Royal Fleet Auxiliary
• Women's Legal Education and Action Fund, a Canadian women's legal advocacy group
• Life Extension Advocacy Foundation, a non-profit organization supporting anti-aging research
• A nickname for a Canadian person

• Leave (disambiguation)
• Leef (disambiguation)
• Leif (disambiguation)
• Leefe Robinson (1895-1918), British First World War pilot awarded the Victoria Cross
• Leaf by Niggle, a short story by J. R. R. Tolkien