Neutron could refer to:
- Devices:
- neutron bomb
- neutron cannon
- neutron microscope
- neutronoscope
- neutronic mine, a Borg weapon
- Bela-Neutron device
- Substances:
- anti-neutron, a subatomic particle
- neutrino, a subatomic particle
- neutron, a subatomic particle
- neutronium, a super-dense substance
- neutronic fuel, carried by the Kobayashi Maru
- Spacial phenomena:
- neutron radiation
- neutron star, a collapsed star
- neutronic storm
- neutronic wavefront