SAR
- IPCC Second Assessment Report
- JAR (file format)
- Nationwide Suspicious Activity Reporting Initiative
- Parabolic SAR
- SAR 21
- SAR Academy
- SAR High School
- SAR Records
- SAR supergroup
- SARS (disambiguation)
- Saar (disambiguation)
- Sample of Anonymised Records
- Sandfontein Artillery Regiment
- Sar (astronomy)
- Sar (river)
- Sar (surname)
- Sar and Sarwan
- Sar language
- Sar, Bahrain
- Sar, Iran (disambiguation)
- Sar, Tibet
- Sark
- Saudi Arabia
- Saudi Arabia Railways
- Saudi Arabian riyal
- Savage Alberta Railway
- Scaffold/matrix attachment region
- Scholars at Risk
- School for Advanced Research
- Search and rescue
- Segmentation and reassembly
- Semi-automatic rifle
- Sexual Attitude Reassessment
- Sigma Alpha Rho
- Society for Artistic Research
- Sodium adsorption ratio
- Sons of the American Revolution
- South African Railways
- South Australian Railways
- Special administrative region
- Special administrative regions of China
- Specific absorption rate
- State Artillery Regiment
- Sterling SAR-87
- Stock appreciation right
- Storage Aspect Ratio
- Structure–activity relationship
- Student Aid Report
- Subject access request
- Sulfuric acid
- Super Animal Royale
- Suspicious activity report
- Synthetic-aperture radar
- Syrian Arab Republic
- Systemic acquired resistance
- USS Triton (SSRN-586)
- Šar Mountains