| Acronym | Definition |
|---|
| SAG | Screen Actors Guild |
| SAG | Saginaw (Michigan, USA) |
| SAG | System Administration Guide |
| SAG | Software AG |
| sAg | Surface Antigen |
| SAG | Semi-Autogenous Grinding (mills) |
| SAG | State Advisory Group (OJJDP) |
| SAG | Support and Gear (bicycling; support transportation accompanying riders) |
| SAG | SQL Access Group |
| SAG | Scientific Advisory Group (GAW) |
| SAG | Support and Guidance (cycling) |
| SAG | Servicio Agricola Ganadero (Agriculture Cattle Service, Chile) |
| SAG | Surface Action Group |
| SAG | Senior Advisory Group |
| SAG | Securitag Assembly Group (Taiwan) |
| SAG | Street Address Guide |
| SAG | Siemens Aktiengesellschaft |
| SAG | Software Action Group |
| SAG | Site Assessment Grant (Wisconsin DNR) |
| SAG | Study Advisory Group |
| SAG | Senescence-Associated Gene |
| SAg | Super Antigen |
| SAG | State Adjutant General |
| SAG | Sub-Activity Group |
| SAG | Société Astronomique de Genève (French: Astronomical Society of Geneva; Switzerland) |
| SAG | Special Assignment Group (Maltese police) |
| SAG | Saudi Arabia Government |
| SAG | Straight Acting Gay (slang) |
| SAG | Staatliche Aktiengesellschaft (German) |
| SAG | Sports Arbitrage Guide |
| SAG | Special Activities Group |
| SAG | Software Architecture Group (University of Illinois at Urbana-Champaign) |
| SAG | Stage Actors Guild |
| SAG | Saint Anthony Guide |
| SAG | Saint-Aubin de Guérande (France) |
| SAG | Studies Assumption Group (UK MOD advisory body) |
| SAG | Système d'Analyse Géographique (French: Geographical Analysis System) |
| SAG | Secure Application Gateway |
| SAG | Something Awful Goon(s) (visitors to Something Awful website) |
| SAG | Service, Application, Gestion Informatique (French: Service, Law, and Information Management) |
| SAG | Spark Arrester Guide |
| SAG | System Architecture Group (US DoD) |
| SAG | Secretaria de Agricultura y Ganaderia (Spanish; Ministry of Agriculture and Livestock; Honduras) |
| SAG | Strategic Aircraft Generation (US DoD) |