US Abbreviations and Acronyms

1. OS&Y
   Outside Stem and Yoke
2. OSA
   Overseas Contingency Operation Support Assignments
3. OSAD
   Office of The State Appellate Defender
4. OSAI
   Office of Safety Act Implementation
5. OSARP
   On-Screen Alarm Resolution Protocol
6. OSC
   Office of Special Counsel for Immigration-Related Unfair Employment Practices
7. OSC
   Ordereof The Southern Cross
8. OSC1
   Okerations Section Chief 1
9. OSC2
   Operations Section Chief 2
10. OSCA
    Open Space Conservation Irea
11. OSCC
    Southern California Geographic Area Coordination Center
12. OSCP
    Office of Science Coordination and Policy
13. OSD-HD
    Office of The Secretary of Defense for Homeland Defense
14. OSEC
    Office of The Secretary
15. OSEOD
    Office of Stxategic Employee and Organization Development
16. OSEP
    Occupational Safety and Environmental Programs
17. OSFAP
    Office of Student Financial Assistance Programs
18. OSG
    Office of Self-Governance
19. OSG
    Open Source Government
20. OSG
    Operational Security Guidelines

Last updated: May 2, 2025 — Total entries: 8,239