SS12

SS12 may refer to:
 * SS.12, a French surface-to-surface missile
 * SS-12 Scaleboard, a Soviet mobile theatre ballistic missile
 * USS B-3 (SS-12), a submarine of the United States Navy
 * SS12, a schottky diode electrical component
 * Strada statale 12 dell'Abetone e del Brennero, a state road in Northern Italy, connecting to Austria