SAC
- Air Force Global Strike Command
- Air sac
- Amniotic sac
- Anal sac
- BMW 5 Series (E39)
- Bursa sac
- California State Prison, Sacramento
- Central Organisation of the Workers of Sweden
- Chorion
- Comisión Nacional de Actividades Espaciales
- Dural sac
- Egg sac
- Emergency Management Services
- Fecal sac
- Gestational sac
- Greater sac
- Gular skin
- Ink sac
- Lacrimal sac
- Lesser sac
- MPEG Surround
- NATO Strategic Airlift Capability
- Native American flute
- Ovule
- Pleural cavity
- President's Science Advisory Committee
- S-Allyl cysteine
- S.A.C. (control code)
- S.A.C. Capital Advisors
- SA-C programming language
- SAC (gene)
- SAC programming language
- SAC-46 (handgun)
- SISD Student Activities Complex
- Sac (people)
- Sac City, Iowa
- Sac County, Iowa
- Sac River
- Sac language
- Sac spider
- Sack (disambiguation)
- Sacramento Executive Airport
- Sacramento Kings
- Sacramento Valley Rail Station
- Sacramento, California
- Sacrifice bunt
- San Antonio College
- Santa Ana College
- Sač
- Scottish Arbitration Centre
- Second Artillery Corps
- Securities Association of China
- Selected Areas in Cryptography
- Senior Aircraftman
- Senior Assistant Commissioner
- Seoul Arts Center
- Service d'Action Civique
- Shakespeare Authorship Coalition
- Shenyang Aircraft Corporation
- Singapore Accountancy Commission
- Societas Apostolatus Catholici
- Society of the Catholic Apostolate
- Soldiers of Aryan Culture
- Songwriters Association of Canada
- Sooner Athletic Conference
- Source of activation confusion model
- South Atlantic Conference
- Southern Air Command (India)
- Space Applications Centre
- Special Activities Center
- Special Administration Console
- Special Agent in Charge
- Special Area of Conservation
- Special advisory committee
- Spindle assembly checkpoint
- Sports activity coupe
- St Albans City railway station
- St Anne's Cathedral, Belfast
- St. Andrew's College, Aurora
- St. Anne's Cathedral, Debrecen
- Standardization Administration of China
- State Administration Council
- State Affairs Commission of North Korea
- State Security and Peace Commission
- Strategic Air Command
- Strict Avalanche Criterion
- Student Activity Complex
- Students' Administrative Council, University of Toronto
- Summit Athletic Conference (IHSAA)
- Superior Art Creations
- Supplemental access control
- Sveriges Arbetares Centralorganisation
- Swiss Alpine Club
- Symposium on Applied Computing
- Synovial sac
- The Society of Arts and Crafts of Boston
- Tin-silver-copper
- Venom sac
- Vestibular sacs (disambiguation)
- Victorian Certificate of Education
- Viscid sac
- Vocal sac
- Yolk sac