Plane may refer to:

• Airplane, a type of fixed-wing aircraft
• Plane (mathematics), theoretical surface which has infinite width and length, zero thickness, and zero curvature
• Plane (tool), a woodworking tool for flattening surfaces
• Plane (cosmology), a theoretical region beyond the known universe, or the region containing the universe itself
  • Plane (Dungeons & Dragons), a plane of existence within the role-playing game
  • The Gathering), a plane of existence within the trading card game
• Planing (sailing), a method of travelling quickly across water by using speed to lift the hull out of the water
• Plane of immanence, a philosophical concept
• Platanus, a genus of trees
• Sycamore maple

Additionally, Planes can refer to:

• Planes Mistaken For Stars, a punk rock band
• Rafael Ximeno y Planes (1759-1825), Spanish painter.
• Planes, Alicante, a municipality in Spain

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