SS4 may refer to:
*
SS-4 Sandal
The R-12 Dvina was a theatre ballistic missile developed and deployed by the Soviet Union during the Cold War. Its GRAU designation was 8K63 (8K63U or 8K63У in Cyrillic for silo-launched version), and it was given the NATO reporting name of ...
, a Soviet theatre ballistic missile
*
Ambrosini SS.4, an Italian fighter aircraft prototype
*
Pindad SS4, an Indonesian battle rifle in development
*
SS 4, an Italian state highway, linking Rome to the Adriatic sea
*
Super Select, a four-wheel drive system produced by Mitsubishi
* , a submarine of the United States Navy
*
Super Saiyan 4, a fictional transformation from the Dragon Ball series
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