Beam may refer to:

• Light beam, or beam of light, a directional projection of light energy
  • Laser beam
• Radio beam
• Particle beam, a stream of charged or neutral particles
  • Charged particle beam, a spatially localized group of electrically charged particles
    • Cathode ray, or electron beam or e-beam, streams of electrons observed in discharge tubes
    • X-ray beam, a penetrating form of high-energy electromagnetic radiation
  • Molecular beam, a beam of particles moving at approximately equal velocities

• Anong Beam, Canadian Ojibwe artist and curator
• Beam (music), a connection line in musical notation
• Beam, to transport matter using the Transporter in the Star Trek fictional universe
• Beam (rapper), American hip hop artist
• BEAM.TV, an online digital delivery and content management platform
• BEAM Channel 31, a Philippines television network
• Beam (website), later Mixer, a former video game live streaming platform
• BeamNG.drive, an open-world vehicle simulation video game
• The Beam (fairy tale), the Brothers Grimm tale 149
• Carl Beam (1943-2005), indigenous Canadian artist

• Beam Software, later Krome Studios Melbourne, an Australian video game development studio
• Broadcast Enterprises and Affiliated Media, a telecommunications company in the Philippines
• Beam Energy, an energy provision arrangement of British company Robin Hood Energy

• BEAM (Erlang virtual machine), a virtual machine at the core of the Erlang Open Telecom Platform
• BEAM robotics (biology, electronics, aesthetics and mechanics), a style of robotics
• Beam search, a heuristic search algorithm
• Bigelow Expandable Activity Module, an experimental expandable space station module
• Apache Beam, a data processing programming model
• Beam (structure), a structural element that resists lateral loads

• Beam (horse), a racehorse
• Beam (nautical), the width of a ship at its widest point
• Beam, Great Torrington, an estate in Devon, England
• Balance beam, or beam, a piece of gymnastics equipment
• The Beam (geological outcrop), in South Hero, Vermont, U.S.

• Battle of the Beams, a period in World War 2 of air radio navigation countermeasures
• Beam theory, or Euler–Bernoulli beam theory, a means of calculating load-carrying and deflection of structural beams
• Beam antenna, or directional antenna, an antenna which radiates or receives greater power in specific directions
• Bessel beam, a wave whose amplitude is described by a Bessel function
• Blaster beam, a musical instrument
• Gaussian beam, a beam of electromagnetic radiation whose amplitude is given by a Gaussian function
• Beme (disambiguation)
• "Light The Beam!", a rallying chant used by fans of the Sacramento Kings