Arbor or Arbour may refer to:

• Arbor (garden), a shaded sitting place
• Arbor (tool) or mandrel
• Arbor knot, a knot commonly used to attach fishing line to a fishing reel
  • Arbor, the central post of a fishing reel to which fishing line is attached
• Arbor Drugs, a defunct Detroit, Michigan-based drug store chain
• Arbor, the steel frame of a fly system in a theatre
• Arbors Records, a jazz record label
• The Arbors, a 1960s pop group
• Arbor in a mechanical clock, a spindle or shaft supporting a gear or wheel

See also

• Arbor Day, a day for planting trees
• Arboretum, a botanical garden primarily devoted to woody plants
• Arbor vitae (disambiguation)