| SNR |
Signal to Noise Ratio |
| SNRM |
Set Normal Response Mode |
| SNRME |
Set Normal Response Mode Extended |
| SNS |
Session Network Services |
| SNVT |
Standard Network Variable Type |
| SO |
Shift Out |
| SO |
Small Outline |
| SO |
Supporting Organization |
| SOA |
Start Of (zone of) Authority (DNS) |
| SOA |
Service Oriented Architecture |
| SOAP |
Simple Object Access Protocol |
| SOB |
Start Of Block |
| SOB |
Statement Of Boredom |
| SOC |
System On a Chip |
| SODIMM |
Small Outline Dual Inline Memory Module |
| SOE |
Standard Operating Environment |
| SOFL |
Structured Object-Oriented Formal Language |
| SOG |
Sync On Green |
| SOGT |
Senior Officials Group on Telecommunications |
| SOH |
Section Overhead |
| SOH |
Start of Header/Heading |
| SOHO |
Small Office, Home Office |
| SOI |
Silicon On Insulator |
| SOIF |
Summary Object Interchange Format |
| SOL |
Siemens Optical Link |
| SOL |
Seniors/Senioren On Line |
| SOL |
Special Object Library |
| SOL |
Simulation Oriented Language |
| SOLAS |
(International Convention for the) Safety Of Life At Sea |
| SOM |
System Object Model (IBM) |
| SOM |
Start Of Message |
| SONET |
Synchronous Optical Network |
| SONETT |
Soziales Netz Telecommunikation |
| SOP |
Standard Operating Procedure |
| SOP |
Service Object Pair |
| SORBS |
Spam and Open Relay Blocking System |
| SOS |
Start Of Significance |
| SOS |
Silicon On Sapphire |
| SOS |
Sophisticated Operating System |
| SOSI |
Shift Out Shift In |
| SOSIG |
Social Science Information Gateway |
| SOUP |
Simple Offline Usenet Packet |
| SOX |
Sound Exchange (File) |
| SP |
Segment Priority |
| SP |
Service Provider |
| SP |
Stack Pointer |
| SP |
Space (Leertaste) |
| SP |
System Program |
| SPA |
Secure Password Authentication |
| SPA |
Service Point Application |