| MS | Main Sequence | - | Atmospheric Research Center |
| MS | Mass Spectrometer | - | Computer Acronyms(common) |
| MS | Molecular Spinor | - | Computer Acronyms(common) |
| MS | Multiple Scattering | - | Computer Acronyms(common) |
| MS | Mass Spectrometry | - | Medical |
| MS | Multiple Sclerosis | - | Medical(slang) |
| MS | Machine Screw | - | Organizations |
| MS | Machine Steel | - | Organizations |
| MS | Margin Of Safety | - | Organizations |
| MS | Mass Spectrometer | - | Organizations |
| MS | Master Switch | - | Organizations |
| MS | Material Specification | - | Organizations |
| MS | Mating Sequence And Control | - | Organizations |
| MS | Milestone | - | Organizations |
| MS | Military Standard (Parts Designation) | - | Organizations |
| MS | Millisecond | - | Organizations |
| MS | Mission SPecialist | - | Organizations |
| MS | Mission Station | - | Organizations |
| MS | Multistring | - | Organizations |
| MS | Mano Sinistra (Latin | - | Astronomy |
| MS | Malay Language (ISO 639-1 Code) - Millisecond | - | Astronomy |
| MS | Megasecond | - | Astronomy |
| MS | Millisiemens | - | Astronomy |
| MS | MASnet Code For The Mass Storage System | - | Business and Finance |
| MS | The Company Microsoft | - | Business and Finance |
| MS | media server
| - | Human Genome |
