| SOP | Second-order Potential (method For Positron-atom Scattering) | - | Computer Acronyms(common) |
| SOP | Split-operator Propagator | - | Computer Acronyms(common) |
| SOP | Standard Operating Procedure | - | Computer Acronyms(common) |
| SOP | Secondary Oxygen Pack | - | Organizations |
| SOP | Spacelab OPportunity Payload | - | Organizations |
| SOP | Standard Operating Procedure | - | Organizations |
| SOP | Subsystem Operating Program | - | Organizations |
| SOP | Subsystem(s) Operating Procedure | - | Organizations |
| SOP | Systems Operation Plan | - | Organizations |
| SOP | Standard Operating Procedure | - | ISO Country Codes |
| SOP | Standing/Standard Operating Procedure | - | Astronomy |
| SOP | security operating procedures
| - | Human Genome |
