SSR

SSR can be initials for:

Satellite Situation Report
Schedule of Service Requirements
Secondary School Report
Secondary surveillance radar
Security sector reform
Signal source resolution
Signal Stability Routing protocol
Simple-sequence repeat - see microsatellite
Sirius Satellite Radio
Small screen rendering - see Opera web browser, Microbrowser
"Société suisse de radiodiffusion et télévision", the French name for the Swiss Broadcasting Corporation
"Società svizzera di radiotelevisione", the Italian name for the Swiss Broadcasting Corporation
"Societad svizra da radio e televisiun", the Romansh name for the Swiss Broadcasting Corporation
Software Service Request
Solid State Recorder
Solid State Records
Solid-state relay
The South Saskatchewan Regiment
Soviet Socialist Republic - see Republics of the Soviet Union
Societas Studiosorum Reformatorum - a Dutch student society, raised in the late 19th century, with chapters throughout the country (such as SSR-Leiden, SSR-Rotterdam or SSR-Wageningen)
in Primary schools and Secondary schools it can be Standardized Sustained Reading time, more commonly known as Library time
a Chevrolet small truck, the Chevrolet SSR