Beam may refer to:

• Beam (nautical), in nautical terminology,the most extreme width (or breadth) of a vessel, or a point alongside the ship at the mid-point of its length. The latter usage also appears in the expression "abeam".
• Beam (structure), a construction element
• Beam (music), is a connection line in musical notation
• BEAM robotics, an automatically moving machine based on analog electronics
• "Basic Enterprise Architecture Methodology", an acronym meaning , a procedure used for building larger databases or information systems
• Balance beam (gymnastics), a piece of gymnastics equipment.
• Charged particle beam, in physics and technology
• Relativistic beaming in astrophysics
• Light beam
• In science fiction:
  • Tractor beam, the hypothetical beam from science fiction that pulls objects in.
  • Beam weapons from the Metroid series, see Items in the Metroid series
  • See raygun.

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