- AGSS stands for Auxiliary Research Submarine
- AGSS stands for Anaesthetic Gas Scavenging System
- AGSS stands for Association of the Geographical Societies of Slovenia (est. 1922)
- AGSS stands for Attitude Ground Support System
- AGSS stands for Austria Germany Slovenia Switzerland (geography)
- AGSS stands for Anesthesia Gas Scavenging System
AGSS