S&D (disambiguation)

S&D often refers to the Progressive Alliance of Socialists and Democrats. It may also refer to:


 * Search and destroy, a military strategy, notoriously in the Vietnam War
 * Silver & Deming, reduced-shank drill bits
 * Somerset & Dorset Joint Railway, English railway line
 * Speech and debate, e.g. in debating societies
 * Spybot – Search & Destroy, a spyware and adware removal program for Windows
 * Supply and demand, an economic model of price determination in a market