SSDR
SSDR stands for:
- Species-specific Defense Reaction, see Defense (Biology) #Abwehrhandlungen
- Single Seat Deregulated UK, class of single-seat ultralight aircraft, see E-Go (aircraft)
- Soul Sister Dance Revolution , Dutch band
- Sea Service Deployment Ribbon, see Medals and Decorations of the United States Armed Forces #Awards from the US Navy and US Marine Corps
