title: CAT III
text: # CAT III
  
  CAT III may refer to:
  
  ## Science and technology
  
  * Chloramphenicol O-acetyltransferase, an enzyme
  * CAT III, a measurement category of live electrical circuits
  * CAT III, an instrument landing system category in aviation
  
  ## Other uses
  
  * Category III, in the Hong Kong motion picture rating system
  