Halon may refer to:

• Haloalkane, or halogenoalkane, a group of chemical compounds consisting of alkanes with linked halogens (in particular, bromine-containing haloalkanes)
• Halomethane compounds:
  • Halon 10001 (iodomethane)
  • Halon 1001 (bromomethane)
  • Halon 1011 (bromochloromethane, CH₂BrCl)
  • Halon 104 (carbon tetrachloride)
  • Halon 1103 (tribromofluoromethane)
  • Halon 112 (dichlorofluoromethane)
  • Halon 1201 (bromodifluoromethane)
  • Halon 1202 (dibromodifluoromethane)
  • Halon 1211 (bromochlorodifluoromethane, CF₂ClBr)
  • Halon 122 (dichlorodifluoromethane)
  • Halon 1301 (bromotrifluoromethane, CBrF₃)
  • Halon 14 (tetrafluoromethane)
• Halon 2011B (1-bromo-2-chloroethane)
• Halon 2301 (1,1,1-trifluoro-2-bromoethane)
• Halon 2311 (1,1,1-trifluoro-2,2-chlorobromoethane, halothane)
• Halon 242 (1,2-dichlorotetrafluoroethane)
• Halon 2402 (dibromotetrafluoroethane, C₂Br₂F₄)—used as a fire extinguisher
• Halon 2501 (pentafluorobromoethane)
• Halon 2600 (hexafluoroethane)
• Halon 4402 (1,1,2,2-tetrafluoro-1,4-dibromobutane)