| Acronym | Definition |
|---|
| GARR | General Anti-Avoidance Rules (taxes; India) |
| GARR | Groupe d'Appui aux Rapatriés et Réfugiés (French: Support Group for Repatriates and Refugees; Haïti) |
| GARR | Guidelines for Authority Records and References (International Federation of Library Associations and Institutions) |
| GARR | Gruppo Armonizzazione Reti di Ricerca |
| GARR | Georgia Association of Recovery Residences |
| GARR | Google AdSense Referral Rotator (Internet advertising) |
| GARR | General Auditing Rules and Regulations (est. 1989; Ministry of Finance; Bhutan) |
| GARR | Grand American Road Racing |