SP1
| Acronym | Definition |
|---|---|
| SP1 | Service Pack 1 (Microsoft) |
| SP1 | Serine Protease 1 (enzyme) |
| SP1 | Specific Protein 1 (biochemistry) |
| SP1 | Stimulatory Protein 1 (biochemistry) |
| SP1 | Scalable Powerparallel System |
| SP1 | Spacer Peptide 1 (biochemistry) |
| SP1 | Schwangerschafts-Protein 1 (obstetrics) |
| SP1 | Standard Professional 1 (teaching license; North Carolina) |
| SP1 | Signal Processor 1 (4ESS) |
| SP1 | Steam Propulsionman First Class (USN rating) |