СССР (Союз Советских Социалистических Республик) is a Russian (Cyrillic) abbreviation for the Soviet Union.
CCCP may also refer to:
- Combined Community Codec Pack, a filter pack developed for Microsoft Windows to play back rich multimedia content
- CCCP Fedeli alla linea, a punk/art band from Reggio Emilia, Italy
- C.C.C.P. (band), a German synthpop group
- Carbonyl cyanide m-chlorophenyl hydrazone, a highly toxic ionophore and decoupler of the respiratory chain