The abbreviation DSP can refer to:
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Computing
- Digital signal processing, the study of signals in a digital representation and their processing methods
- Digital signal processor, a specialized microprocessor designed specifically for digital signal processing
- Dylan Server Pages, a web template engine using the Dylan language
- Delivery Service Partner, a type of sales partner for Microsoft
Education
- Developmental Social-Pragmatic model, a developmental intervention for Autistic Spectrum Disorders
- Direct Support Professional, a US term for specialists in education of the mentally disabled
Military
- Defense Standardization Program, a standards program in the US military
- Defense Support Program, the U.S. Air Force early-warning satellites
- Special Presidential Division, an elite Zairean military unit charged with the protection of the president
Music
- Deathlike Silence Productions, an independent record label in Norway
- Daesung Entertainment, a record label
- dsp (group), an experimental electronic music collective
Politics
- Democratic Left Party (Turkey) - (Turkish: Demokratik Sol Parti, DSP)
- German State Party (Deutsche Staatspartei), a minor political party of the Weimar Republic period
- Democratic Socialist Perspective (Australia)
- Democratic Socialist Party (Japan)
- Democratic Socialist Party (Prabodh Chandra) (India)
- Democratic Socialist Party (Morocco)
Other
- Dry Sterilisation Process, for the cold and fast sterilisation of surfaces
- Delta Sigma Phi, a social fraternity established in 1899
- Delta Sigma Pi, Co-ed business fraternity
- Deputy Superintendent in the Singapore Police Force
- Deutscher Spiele Preis, a board games award in Germany
- Designated Suppliers Program, an anti-sweatshop standard used in some US universities
- "decessit sine prole", Latin phrase meaning "died without issue", as used in genealogy diagrams
