The term DSSA can stand for a number of things, including: Dian Swastatika Sentosa, the energy subsidiary of Indonesian conglomerate Sinar Mas Dental Students' Scientific Association of Egypt The U.S. Defense Security Service Academy domain-specific software architecture Department of Anti-terrorism Strategic Studies, an Italian organization under investigation by the Italian police Denver Society of Security Analysts The Distributed System Security Architecture, a computer security architecture The Duluth, South Shore and Atlantic Railroad Dynamic Security Surveillance Agent, a software application written in Java language The Duluth Superior Sailing Association, offering the joy of sailing to the entire Duluth-Superior community. Data Storage System for ACSF, a system to record information about the driving with an automatically commanded steering function.