| Rank | Abbreviation | Meaning |
|---|
| ***** | MAOS | Microwave Assisted Organic Synthesis
| |
| ***** | MAOS | Markinch Amateur Operatic Society
| |
| **** | MAOS | Multiple Application Operating System
| |
| **** | MAOS | Metal Aluminum Oxide Semiconductor
| |
| **** | MAOS | Maintenance Approved Organization Scheme
| |
| *** | MAOS | Maintenance Approved Organisation Scheme
| |
| *** | MAOS | Major Alarm Operating Status
| |
| *** | MAOS | Mars Atmospheric Oxidant Sensor
| |
| *** | MAOS | Motivational Analysis of Organizational Style
| |
| ** | MAOS | Multi-Access Open System
| |
| ** | MAOS | Medicare Advantage Organizations
| |
| ** | MAOS | Metal Alumina Oxide Semiconductor
| |
| ** | MAOS | microsomal acetaldehyde-oxidizing system
| |
| * | MAOS | middle-age-onset schizophrenia
| |
| * | MAOS | Margaret Atwood Official Site
| |
| * | MAOS | Model Analysis and Optimisation System
| |
| * | MAOS | monoamine oxidases
| |
| * | MAOS | Major Attack Options
| |
| * | MAOS | Metal Aluminum Oxide Silicon
| |
| * | MAOS | Mineral Area Office Supply
| |
| * | MAOS | Minimum Airfield Operating Surface
| |
| * | MAOS | Multiagent Optimization System
| |
| * | MAOS | Morley Amateur Operatic Society
| |
| * | MAOS | Memory Administration Operations System
| |
| * | MAOS | Marine Advisory Ohio State
| |