| Rank | Abbreviation | Meaning |
|---|
| ***** | KAOS | [not an acronym] International Organization of Evil (Get Smart TV series)
| |
| *** | KAOS | Kill All On Sight
| |
| *** | KAOS | Killing As an Organized Sport
| |
| *** | KAOS | Knowledge Acquisition in Automated Specification
| |
| *** | KAOS | Knowledgeable Agent-Oriented System
| |
| ** | KAOS | Kingsbury Amateur Operatic Society
| |
| ** | KAOS | Kirkcaldy Amateur Operatic Society
| |
| ** | KAOS | Kill All Other Survivors
| |
| ** | KAOS | Kindred Agents of Shroud
| |
| * | KAOS | International Organization of Evil
| |
| * | KAOS | Kick Ass On Saturdays
| |
| * | KAOS | Kilo Aperture Optical Spectrograph
| |
| * | KAOS | Kent Applicative Operating System
| |
| * | KAOS | Kelvin's Adaptive Optical Systems
| |
| * | KAOS | Killing as Organised Sport
| |
| * | KAOS | Kazusa Arabidopsis Data Opening Site
| |
| * | KAOS | Krackers Association of Sweden
| |
| * | KAOS | Kaon Spectrometer
| |
| * | KAOS | Kansas Adventures in Outer Space
| |
| * | KAOS | KresT Agent Operating System
| |
| * | KAOS | Killing as Organized Sport
| |
| * | KAOS | Kippax Amateur Operatic Society
| |