Computing

• Security Policy Database, rules in an IPsec implementation, for example in a High Assurance Internet Protocol Encryptor

• Serial presence detect, a method to access memory module information

• SharePoint Designer, an interface for designing in Microsoft SharePoint

Fiction

• Space Patrol Delta, an organization in Power Rangers: S.P.D.

• Special Police Dekaranger, a police organization in Tokusou Sentai Dekaranger

Medicine

• Schizotypal personality disorder, not to be confused with the below.

• Schizoid personality disorder, a personality disorder

• Sadistic personality disorder, a personality disorder

• Semantic pragmatic disorder, a pervasive developmental disorder

• Symphysis pubis dysfunction, pelvic joint pain during pregnancy or childbirth

• Sensory processing disorder, a neurological disorder

• Sterile processing department, where surgical instruments are sterilized

• Salmon poisoning disease

Organisations

• Freedom and Direct Democracy, a Czech political party

• Nintendo Software Planning & Development

• Small Press Distribution, distributor for literary publishers, Berkeley, California, US

• Salym Petroleum Development, a petroleum company in Russia

Police

• Sacramento Police Department

• Sarasota Police Department

• Seattle Police Department

• Springfield Police Department (disambiguation)

Bank

• Shanghai Pudong Development Bank, or SPD Bank, China.

Science and technology

• Suspended Particle Device, glass or plastic with electrically variable light transmission

• Shimano Pedaling Dynamics, clipless bicycle pedals

• Spectral power distribution, of light

• Surge protection device, for electrical voltages

• Severe plastic deformation

• Symmetric positive definite, in linear algebra

Other

• Saidpur Airport, Bangladesh by IATA code

• Supplementary planning document in UK local development framework

See also

• SDP (disambiguation)

• DSP (disambiguation)

• PDS (disambiguation)