| Acronym | Meaning |
| SLAP | Saboted Light Armor Penetrating (.50 caliber M903 cartridge) |
| SLAP | Senior Leader Approval Process (US DoD) |
| SLAP | Service Life Assessment Plan |
| SLAP | Sheriffs Labor Assistance Program |
| SLAP | Smith Lake Action Patrol (Marion County, Florida) |
| SLAP | Solar Lunar Almanac Program |
| SLAP | Sonar/Lunar Almanac Program |
| SLAP | State and Local Aviation Planning (various locations) |
| SLAP | Supply Logistics Analysis Program |