| Acronym | Meaning |
| MWSP | Macro Water Sharing Plans (New South Wales, Australia) |
| MWSP | Master Water and Sewer Plan |
| MWSP | Melamchi Water Supply Project (Melamchi Water Supply Development Board; Nepal) |
| MWSP | Michigan Works! System Plan |
| MWSP | Missouri Workers' Safety Program (Jefferson City, MO) |