PSD

PSD may refer to: pica

Educational bodies

 * Pennsylvania School for the Deaf, a Pre-K to 12th grade school for Deaf and Hard of Hearing students, located in the Germantown section of Philadelphia, Pennsylvania
 * Philippine School Doha, a Filipino school in Doha, Qatar
 * Pontiac School District, a school district in Michigan, US
 * Poudre School District, a school district in Larimer County, Colorado

Government and military

 * Payment Services Directive, EU regulation for payment services
 * Pesticides Safety Directorate, UK
 * Presidential Study Directive, a kind of national security directive from the Obama presidency
 * Prevention of Significant Deterioration (PSD) permit, under the Clean Air Act (United States)
 * Protective Services Detail, Personal Security Detachment, or Personal Security Detail; US military security details

Language

 * Pennsylvania Sumerian Dictionary, lexicography project for the ancient language isolate
 * Plains Indian Sign Language (ISO 639-3 code: psd)
 * Proto-South Dravidian, unattested language of south India

Africa

 * Social Democratic Party (Angola), a political party of Angola
 * Social Democratic Party (Benin), a political party of Benin
 * Social Democratic Party of Madagascar, a political party of Madagascar
 * Social Democratic Party (Rwanda), a political party of Rwanda
 * Socialist Destourian Party, former name (to 1988) of the ruling party in Tunisia, currently called Constitutional Democratic Rally

Americas

 * Parti social démocratique du Québec, a former provincial political party in Canada
 * Democratic Socialist Party (Argentina), a defunct political party of Argentina
 * Social Democratic Party (Brazil, 1945–65), a defunct political party of Brazil
 * Social Democratic Party (Brazil, 2011), a current political party of Brazil
 * Social Democratic Party (El Salvador), a political party of El Salvador
 * Social Democratic Party (Mexico), a defunct political party of Mexico
 * Social Democratic Party (Nicaragua), a political party of Nicaragua

Europe

 * Civil Movement "People's Self-Defense", a defunct political movement in Ukraine which was part of the Our Ukraine–People's Self-Defense Bloc electoral alliance
 * Party of Socialists and Democrats, a major political party of San Marino
 * Social Democratic Party of Albania, a minor political party of Albania
 * Social Democratic Party (France), a defunct political party of France
 * Social Democratic Party (Moldova), a political party of Moldova
 * Social Democratic Party (Portugal), a major political party of Portugal
 * Social Democratic Party (Romania), a major political party of Romania
 * Social Democratic Party (Spain), a defunct political party of Spain

Computing

 * Personal or portable storage device
 * .psd, a Photoshop document file extension
 * Professional Scrum Developer, a course leading to certification for Scrum (development)
 * Power spectral density, the distribution of power per unit time into frequency components composing that signal.

Medicine

 * Protein S deficiency
 * Post-stroke depression
 * Postsynaptic density, a specialization of the cytoskeleton at the synaptic junction
 * Psychiatric service dog

Other uses in science and engineering

 * Particle size distribution, in granular materials
 * Platform screen doors, in railway platforms
 * Position sensitive device or detector, a two-dimensional photodetector
 * Positive semidefinite (disambiguation)
 * Power spectral density, distribution of power of a signal
 * Program Service Data, data displayed on HD radio receiver

Other uses

 * PSD (rapper), a Californian rapper and hip-hop producer
 * Port Said Airport, Egypt (IATA code PSD)
 * Private Sector Development, term used in international development
 * PSD Bank, German banking group


 * Patricia Street Deli, a famous sandwich and soup restaurant located in the tourist town of Jasper, Alberta, Canada
 * FK PSD, a handgun chambered mainly in 7.5 FK but also comes with barrels for 10mm Auto and 9x19mm