SS-2

SS2 or SS-2 may be:

* USS "Plunger" (SS-2), one of the earliest submarines of the United States Navy
* Reliant SS2, a British sports car
* R-2 rocket, Soviet Union manufactured improvement of the V-2 rocket (NATO reporting name: "SS-2 Sibling")
* SpaceShipTwo, a suborbital spaceplane designed for space tourism
* System Shock 2, a 1999 science-fiction/horror themed PC video game.
* Stick Soldiers 2, an internet-based deathmatch shooter video game series
* Setanta Sports 2, a British TV sports channel
* SS2PL, a mechanism in database systems, used to enforce conflict serializability and strictness
* Single-Shift 2, C0 and C1 control codes in Western Latin character sets
* Pindad SS2, an Indonesian assault rifle made to replace the SS1.