| Acronym | Definition |
|---|
| CSS | Cascading Style Sheet |
| CSS | Counter-Strike: Source (gaming) |
| CSS | Counter-Strike:Source |
| CSS | Catholic Social Services (various locations) |
| CSS | Combat Service Support |
| CSS | Cross Site Scripting |
| CSS | Context-Sensitive Solutions |
| CSS | Cascading Style Sheet (computing) |
| CSS | Counseling Support Services (various organizations) |
| CSS | Central Security Service |
| CSS | Customer Service and Support (various companies) |
| CSS | College Scholarship Service (Princeton, NJ) |
| CSS | Content Scrambling System (DVD) |
| CSS | Customer Support Services |
| CSS | Cansei de Ser Sexy (Brazilian band) |
| CSS | Control Systems Society |
| CSS | Custom Style Sheet (software) |
| CSS | California Superbike School |
| CSS | Computer Software Services (various locations) |
| CSS | Customer Satisfaction Survey |
| CSS | Cancer-Specifice Survival |
| CSS | Community Support Services |
| CSS | Caja del Seguro Social (Spanish: Social Security Fund; Panama) |
| CSS | Customer Support Solution (software) |
| CSS | Center for Sustainable Systems (University of Michigan) |
| CSS | Computer Systems Support |
| CSS | Cyber-Shot Station (digital cameras; Sony) |
| CSS | College of Saint Scholastica (Duluth, MN) |
| CSS | Counter Strike Steam (gaming) |
| CSS | Connecticut Spring and Stamping (Farmington, CT) |
| CSS | Community Service Scholarship (various schools) |
| CSS | Code de la Sécurité Sociale (France) |
| CSS | Closed Source Software |
| CSS | Cause-Specific Survival (cancer) |
| CSS | Customer Self Service |
| CSS | Center for Statistical Sciences (Brown University; Providence, RI) |
| CSS | Class Software Solutions |
| CSS | Character Selection Screen (video games) |
| CSS | Chirp Spread Spectrum (digital communications) |
| CSS | Community Service Specialist (various organizations) |
| CSS | Crop and Soil Science (various universities) |
| CSS | Clinical Services Specialist (health care) |
| CSS | Combined Synopsis/Solicitation |
| CSS | Customer Service Specialist |
| CSS | Crack Suicide Squad (gaming clan) |
| CSS | Communications Support System |
| CSS | Certified Security Solutions |
| CSS | Computing and Software Systems |
| CSS | Cluster Support System |
| CSS | Customer Support Systems |
| CSS | Chip Spread Spectrum |
| CSS | Connection Successful Signal |
| CSS | Client Server Solutions |
| CSS | Content Security Site |
| CSS | Client Security Software |
| CSS | Contact Start Stop |
| CSS | Client Security Solution |
| CSS | Content Scrambling System |
| CSS | Center Surround Set |
| CSS | Composite Source Signal |
| CSS | Complex Script Support |
| CSS | Combined Suspension System |
| CSS | Cybermedia Support Server |
| CSS | Common Systems Software |
| CSS | Client Stateless Server |
| CSS | Content Services Switches |
| CSS | Command Session Start |
| CSS | Cybershot Station |
| CSS | Cascading Style Sheets |
| CSS | Complex Scripts Sequence |
| CSS | Cluster Support Services |
| CSS | Customer Service Support |
| CSS | Cluster Structured Storage System |
| CSS | Critical System Support |
| CSS | Charcoal-Stripped Serum |
| CSS | Customer Service Site |
| CSS | Constant Surface Speed |
| CSS | Combat Support Services (various locations) |
| CSS | Churg-Strauss Syndrome |
| CSS | Center for Strategic Studies (Jordan) |
| CSS | Commuter Student Services |
| CSS | Child Safety Seats |
| CSS | Catholic Secondary School (Canada) |
| CSS | Channel SubSystem |
| CSS | Community Systems Strengthening |
| CSS | Copenhagen Street Style (blog) |
| CSS | Community Service Society |
| CSS | Camille Saint-Saens (classical composer) |
| CSS | Children's School of Science (Woods Hole, MA) |
| CSS | Customer Support System |
| CSS | Cyclic Steam Stimulation |
| CSS | Cross-Sectional Study |
| CSS | Corporate Services Sector |
| CSS | Commission on Secondary Schools |
| CSS | Classic System Solutions (San Jose, CA) |
| CSS | Content Service Switch(ing) |
| CSS | Circuit Switched Services |
| CSS | Customer Service System |
| CSS | Charter Sports Southeast |
| CSS | Community School South (various locations) |
| CSS | Computer Service Support |
| CSS | Computer Support Specialist |
| CSS | Classroom Support Services |
| CSS | Combat Support System |
| CSS | Contact Start Stop (Hard Disk Drive) |
| CSS | County Surveyors' Society (UK) |
| CSS | Credit Scoring System |
| CSS | Canadian Sleep Society |
| CSS | Computing and Software Systems (degree program) |
| CSS | Computer-Science School |
| CSS | Centrally Sponsored Schemes (India) |
| CSS | Center for Space Sciences (University of Texas at Dallas) |
| CSS | Colorado Springs School |
| CSS | Cyclic Steady State |
| CSS | Common Sense Science (Roswell, GA) |
| CSS | Core System Software |
| CSS | Core Spatial Strategy (UK) |
| CSS | Celtic Football Club (Scottish soccer club) |
| CSS | Corkscrew Swamp Sanctuary (Naples, FL) |
| CSS | Communications Subsystem |
| CSS | Citizens Signpost Service (EU) |
| CSS | California State Society (Washington, DC) |
| CSS | Command Support System |
| CSS | Crisis Support Services (of Alameda County, California) |
| CSS | Chicken Salad Sandwich |
| CSS | Coastal Systems Station (now Naval Surface Warfare Center Panama City) |
| CSS | Compound Security Systems |
| CSS | Central Support Services |
| CSS | Comprehensive Student Support (various locations) |
| CSS | Consultant Selection System (New York State Department of Transportation) |
| CSS | Contact Start-Stop |
| CSS | Central Station Software |
| CSS | Cost Sharing System |
| CSS | Computer Super Store |
| CSS | Clinical Study Summary (various organizations) |
| CSS | Cascade Sierra Solutions (Oregon) |
| CSS | Commerce Server Staging (software) |
| CSS | comp.sys.sinclair (USENET newsgroup) |
| CSS | Chemung-Schuyler-Steuben (New York) |
| CSS | Centrale Sanitaire Suisse |
| CSS | Clear Skies Solar (New York) |
| CSS | Chrissa Stands Strong (An American Girl) |
| CSS | Cheap Suit Serenaders (band) |
| CSS | Commonwealth Secondary School (Singapore) |
| CSS | Central Statistical Services (South Africa) |
| CSS | Confederate States Ship (Civil War naval vessel prefix) |
| CSS | Chesapeake Service Systems (Chesapeake, VA) |
| CSS | Cisco Security Specialist |
| CSS | College Success Skills |
| CSS | Corn Syrup Solids |
| CSS | Contractor Support Services |
| CSS | Closed Side Setting (rock crushers) |
| CSS | Center for Seismic Studies |
| CSS | Calderbank-Shor-Steane (coding scheme) |
| CSS | Can't Shoot Straight (gaming clan) |
| CSS | Combat Support Squadron |
| CSS | Computer Subsystem |
| CSS | Corporate Security Solutions |
| CSS | Contract Support Services |
| CSS | Coarse Sun Sensor |
| CSS | Computer Systems Squadron |
| CSS | College of Social Studies (Wesleyan University) |
| CSS | Channel Stacking Switch |
| CSS | Cedar Shakes and Shingles (Manassas, VA) |
| CSS | Controlled Slip Seconds |
| CSS | Clerical Support Staff |
| CSS | Chicago, South Shore, and South Bend Railroad |
| CSS | Commander Submarine Squadron |
| CSS | Certified Security Solutions, Inc. (Kirkland, WA) |
| CSS | Customer Switching System |
| CSS | Church and State Separation (political/religious forums) |
| CSS | Certified Security Supervisor (International Foundation for Protection Officers) |
| CSS | Certificate of Special Studies (Harvard Extension School in administration and management) |
| CSS | Containment Spray System |
| CSS | Creative Science Systems (Santa Clara, CA) |
| CSS | Corn Stunt Spiroplasma |
| CSS | Customer Service Series |
| CSS | Cervical Spinal Stenosis |
| CSS | Certified Senior Specialist |
| CSS | Communication Systems Security |
| CSS | Constant Surveillance Service |
| CSS | Client Support Service |
| CSS | Clinical Skills Session (medical training) |
| CSS | Chemical Sciences Scotland (UK) |
| CSS | Christian Stewardship Services (Markham, ON, Canada) |
| CSS | Comcast Sports Southeast/Charter Sports Southeast |
| CSS | Citizens for Sensible Safeguards (coalition) |
| CSS | Commonwealth Security Service (Australia) |
| CSS | Clock Security System (microcontroller, semiconductor) |
| CSS | Communication Support Systems |
| CSS | Control Stick Steering (NASA) |
| CSS | Central Service Systems Co., Ltd. (now CSS Holdings, Ltd.; Japan) |
| CSS | Client Services Supervisor |
| CSS | Concentration in Serum |
| CSS | Content Storage System |
| CSS | Clothing Sales Store |
| CSS | Caustic Soda Solution (chemistry) |
| CSS | Canadian Secret Service |
| CSS | Central Superior Services of Pakistan |
| CSS | Communications Security System |
| CSS | Central Structure Store (computer science) |
| CSS | Calgary Science School |
| CSS | Cyberspace Safety and Security (International Workshop) |
| CSS | Cell Site Switch |
| CSS | Cognitive Systems Society (University of British Columbia, Vancouver, Canada) |
| CSS | Characteristic Structures |
| CSS | Connection-Successful Signal |
| CSS | Coordinator Surface Search |
| CSS | Command Session Start (ITU-T) |
| CSS | COMSEC Subordinate Switch |
| CSS | Commanders Support Staff |
| CSS | Colorado Spider Survey (Denver Museum of Nature and Science) |
| CSS | Contingency Support Staff |
| CSS | Communications Standards Summary |
| CSS | Compassionate Service Society (California) |
| CSS | Composite Source Signal (ITU-T) |
| CSS | Common Support System |
| CSS | Checkpoint Security Supervisor |
| CSS | Commercial Satellite Survivability |
| CSS | Computer Support Section |
| CSS | Communications System Segment |
| CSS | Continuous Signature Service (courier) |
| CSS | Convolutional Spectral Shaping |
| CSS | Coded Switch System |
| CSS | Core Security Services |
| CSS | Core Segment Simulator (NASA) |
| CSS | Copy Scramble System |
| CSS | Collaborative Software System |
| CSS | Coded Switch Set |
| CSS | Certified Semen Services, Inc. (National Association of Animal Breeders) |
| CSS | Central State School (Gladstone, QLD, Australia) |
| CSS | Computer Search System |
| CSS | Combined Suspension System (Renault, France) |
| CSS | Chiswick Community School (UK) |
| CSS | Cement Solidification System |
| CSS | Conspicuous Service Star (New York state) |
| CSS | Consomic Strain |
| CSS | Stigmatine Fathers and Brothers (religious order) |
| CSS | Calpain Small Subunit (gene) |
| CSS | Contaminated Soil Storage |
| CSS | Content Security Suite |
| CSS | Communications Switching Systems |
| CSS | Combat Systems Simulation |
| CSS | Cell Site Selection |
| CSS | Contaminated Soil Site |
| CSS | Counter Sunk Screw |
| CSS | Cassini Stratospheric Sounder |
| CSS | Common Semantics Syntax |
| CSS | Concurrent Servicing Supervisor |
| CSS | Combat Supply System |
| CSS | Colorado Silica Sand |
| CSS | Consolidated Support System |
| CSS | Crew Support Station |
| CSS | Control & Safety System |
| CSS | Command Support Services (group command staffing issues) |
| CSS | Computer Services Squadron |
| CSS | Coolangatta Special School (Gold Coast, Australia) |
| CSS | Control & Status System (NASA) |
| CSS | Client Session Setup |
| CSS | Consolidated Supply Support |
| CSS | Certified Specialist of Spirits (Society of Wine Educators certification) |
| CSS | Center Support Structure |
| CSS | Contemporary Standard Slovene |
| CSS | Currumbin State School (Gold Coast, Australia) |
| CSS | Crycooler Subsystem (HIRDLS) |
| CSS | Coolangatta State School (Gold Coast, Australia) |
| CSS | Centralized Supply Support |
| CSS | Criticality Safety Specification |
| CSS | Centralized Service Server |
| CSS | Cellular System Simulator |
| CSS | Cryptography Support Services |
| CSS | Client Safety Services |
| CSS | Combined Service Support |
| CSS | Communication Support Squadron (US Air Force AFSPC) |
| CSS | Core Software Server |
| CSS | Coomera State School (Gold Coast, Australia) |
| CSS | Chow Sang Sang Jewellery (Hong Kong) |
| CSS | Coombabah State School (Gold Coast, Australia) |
| CSS | Criticality Safety Specialist |
| CSS | Common Services Subsystem |
| CSS | Corps Surgeon Section |
| CSS | Continuity of Service Set |
| CSS | Communications Support Shelter |
| CSS | Continuous Surveillance Service |
| CSS | Communications Security Subordinate Switch |
| CSS | Control Solenoid Status |
| CSS | Communications Selector Switch |
| CSS | Commanders Senior Staff |
| CSS | Clinton State School (QLD, Australia) |
| CSS | Conventional Serial Search |
| CSS | Caningeraba State School (Gold Coast, Australia) |
| CSS | Common Systems Software (Sprint & ITI) |
| CSS | Cable-Stayed Structures |
| CSS | Canungra State School (Gold Coast, Australia) |
| CSS | Collaboration Support Service |
| CSS | Communications Security Symposium |