CSD may refer to:
Finance Central securities depository Confederate States Dollar Serbian dinar, by previous ISO 4217 code
Organizations Education California School for the Deaf (disambiguation), several institutions Canyons School District, in Utah, US Cheltenham School District, in Pennsylvania, US Christina School District, in Delaware, US Cleveland School District, in Mississippi, US Cordova School District, in Alaska, US
Other organizations Canteen Stores Department (India), a chain of stores operated by the Indian Ministry of Defence at military bases CSD Pakistan (Canteen Stores Department), a chain of stores operated by the Pakistani Ministry of Defence Chartered Society of Designers, a British learned society for various kinds of design work Commission on Sustainable Development (1992–2013), a former UN agency Communication Service for the Deaf, an American non-profit company providing ASL services Congress of Democratic Trade Unions (Quebec) (French: Centrale des syndicats démocratiques), a labor organization Consejo Superior de Deportes (Higher Sports Council), Spain's national sports agency Correctional Services Department Hong Kong Correctional Services, prison agency of Hong Kong Czechoslovak State Railways (Czech: Československé státní dráhy) (1918–1939, 1945–1992), former state railroad company
Science and technology Biology and medicine Cat scratch disease, caused by the intracellular bacterium Bartonella henselae Chronic subjective dizziness Citrus stubborn disease, a plant disease Cortical spreading depression Communication Sciences and Disorders, a discipline encompassing speech-language pathology, audiology, auditory science, and speech science The complementary sex determiner gene, csd, in Hymenoptera
Computing and telecommunication Canonical signed digit, a system for encoding a floating-point value in two's complement representation Circuit Switched Data, for mobile phones Client-side decoration, a GUI design concept that allows a program's interface to adapt to a user's system Corrective Service Diskette, an update for a software program Cross Spectral Density, sub-category of spectral density.
Other sciences and technologies Cambridge Structural Database Constant speed drive Cumulative spectral decay plot, also known as a "waterfall plot" Cutter suction dredger, a type of dredger
Other uses Cali Swag District, a music group Carbonated soft drinks sector of the beverage industry Christopher Street Day, an annual European LGBTQ celebration and demonstration Cook, Serve, Delicious! and sequels, a series of cooking simulation video games