Sudan, ISO country code

San Diego

Sustainable Development, Environmental, economic and social development that meets the needs of the present without compromising the needs of future generations

Scooby Doo

South Dakota, United States postal abbreviation

Snoop Dogg

Soft drink

Secure Digital card, flash memory card format used in portable device, including digital cameras and handheld computers

Suppressed, a suffix placed at the end of a firearm's model name to note it is fitted with a suppressor.

Standard Deviation, statistics

Significant digits, a method of expressing error in measurement

Siamese Dream, a rock music album from the band The Smashing Pumpkins

Super Dollfie, a doll by Japanese company Volks

Sindhi language

Sicherheitsdienst, Security Police, the intelligence service of the Nazi SS

SafeDisc, a CD/DVD copy protection solution by Macrovision Corporation

SanDisk, US-based multinational corporation which designs and markets flash memory card products

Super deformed, an exaggerated drawing style used in anime and manga

Software Distributor, an HP-UX software package management system

Sub-Divisions of India, an administrative unit of certain states of India

Sinistra Democratica, Italian political party.

Social Democrats (Slovenia), a left-wing Slovenian political party

Sudan Airways, IATA airline designator

Super Dave Osborne, an alter-ego of comedian Bob Einstein

Snare drum

Standard-definition television

SharpDevelop, a free and open source IDE for the C# Visual Basic .NET programming languages

Stronnictwo Demokratyczne, a defunct Polish party

Swiss Democrats (Schweizer Demokraten) A right-wing - some say far-right - political party in Switzerland

The San Diego Padres, or San Diego Chargers

Sales and Distribution, business