NAMSS
| Acronym | Definition |
|---|---|
| NAMSS | National Association Medical Staff Services |
| NAMSS | National Association for Managers of Student Services (Weston-Super-Mare, England, UK) |
| NAMSS | National Archive of Marine Seismic Surveys |
| NAMSS | North American Mule Sheep Society |
| NAMSS | North Atlantic Marine Supplies & Services (Newfoundland, Canada) |
| NAMSS | Native Americans in Marine and Space Science (Oregon State University; Corvallis, OR) |