| Acronym | Meaning |
| CSR | Canadian Scottish Regiment (Canadian military reserve) |
| CSR | Center for Scientific Review (NIH) |
| CSR | Center for Strategic Research |
| CSR | Central Source Registry (US DoD) |
| CSR | Central Sterilization Room |
| CSR | Certification Status Report |
| CSR | Check Signal Return (NASA) |
| CSR | Chief of Staff Regulation |
| CSR | Child Support Report |
| CSR | Civil Service Regulation |
| CSR | Civil Service Retirement |
| CSR | Coastal Station Radio |
| CSR | Coastal Surveillance Radar |
| CSR | Code de la Sécurité Routière (French: Road Safety Code; Canada) |
| CSR | Code of State Regulations |
| CSR | Codes, Standards, and Regulations |
| CSR | Combat Search & Rescue |
| CSR | Combat Stress Reaction |
| CSR | Combat Support Regiment (Australia) |
| CSR | Combat Surveillance Radar |
| CSR | Combat Systems Review |
| CSR | Command Status Report |
| CSR | Command Strategic Review (USACE) |
| CSR | Command Strategic Reviews (USACE) |
| CSR | Commander in Chief’s (CINC’s) Summary Report (US DoD) |
| CSR | Commander’s Summary Report (US DoD) |
| CSR | Commercial Security Requirements |
| CSR | Communication Service Requirements |
| CSR | Community Service Restitution (various locations) |
| CSR | Community Status Report |
| CSR | Compiled Service Record (military service) |
| CSR | Composite Schedule of Rates (Pakistan) |
| CSR | Comprehensive Spending Review (UK) |
| CSR | Comprehensive Study Report (Canadian Environmental Assessment Agency) |
| CSR | Computer Systems Research |
| CSR | COMSEC Summary Report |
| CSR | Concept Study Report |
| CSR | Conditional Safety Requirement |
| CSR | Confined Spaces Regulations 1997 (UK) |
| CSR | Continued Stay Review |
| CSR | Continuous Synopsis Record (International Ship and Port Facility Security code) |
| CSR | Contract Status Report |
| CSR | Contract Status Review |
| CSR | Contract Summary Report |
| CSR | Control Status Register |
| CSR | Controlled Supply Rate |
| CSR | CONUS Sustaining Requirement |
| CSR | Convention Relating to the Status of Refugees |
| CSR | Cooperative Subregistrar |
| CSR | Corporate Spending Review |
| CSR | Corps Specification Revisions |
| CSR | Cost Sharing Reduction (Health Insurance Marketplace) |
| CSR | Cost-Sharing Reduction |
| CSR | Course Status Report |
| CSR | Crank Shaft Rate (spectrum analysis) |
| CSR | Crew Station Review (NASA) |
| CSR | Crisis Situation Room |
| CSR | Current Situation Room |
| CSR | Customer Service Report |
| CSR | Cutter Support Review (US Coast Guard) |
| CSR | Czecho-Slovak Republic |