SOA
- ISO/IEC 27001
- ONS coding system
- SOA (basketball club)
- SOA (football club)
- SOA governance
- SOA record
- SOA security
- SOAS (disambiguation)
- Safe operating area
- School of the Arts (disambiguation)
- Scottish Orienteering Association
- Secondary organic aerosol
- Security and Intelligence Agency
- Semiconductor optical amplifier
- Service-oriented architecture
- Services Reconnaissance Department
- Siege of Avalon
- Siksha 'O' Anusandhan
- Soa (disambiguation)
- Society of Actuaries
- Society of Ancients
- Society of Authors
- Soldiers of Anarchy
- Sons of Anarchy
- Sons of Azrael
- Southampton Airport Parkway railway station
- Spirit of America (charity)
- State Oceanic Administration
- State of Alert
- Statement of account
- Stimulus onset asynchrony
- Structure of arrays
- Subaru of America
- Swiss Olympic Association
- Western Hemisphere Institute for Security Cooperation