1. NDRF : National Disaster Response Force
2. NDMA : National Disaster Management Act/Authority
3. SDMA : State Disaster Management Act/ Authority
4. DDMA : District Disaster Management Act/ Authority
5. RRC: Regional Response Centre
6. CSSR : Collapsed Structure Search And Rescue
7. EWS : Early Warning System
8. CBRN : Chemical Biological Radiology Nuclear
9. IMD : Indian Meteorological Department
10. CWC : Central Water Commission 
11. GSI : Geological Survey in India
12. INCOIS : Indian National Centre for Ocean Information Services
13. DRDO : Defense Research and Development Organization
14. BPR : Bottom Pressure Recorder
15. DART: Deep Ocean Assessment and Reporting
16. ACWC – Area Cyclone Warning Centre
17. TWS : Tsunami Warning System
18. CAP : Community Awareness Programme
19. DIF : District Information Folder
20. NCMC : National Crisis Management Committee
21. DCE : Daily Class Evaluation
22. NGO: Non- Governmental Organization
23. RRT : Rapid Response Team
24. CISM : Critical Incident Stress Management
25. TEAM : Together Everyone Achieves More
26. PPT: Pre-Positioning Team
27. FEMA: Federal Emergency Management Agency
28. WFP : World Food Programme
29. UIAA: United International Alpine Association



Wireless and Communication 

1. HF : High Frequency
2. VHF : Very High Frequency
3. UHF : Ultra High Frequency
4. EHF : Extremely High Frequency
5. VSAT : Very Small Aperture Terminal
6. BGAN : Broadband Global Area Network
7. INMARSAT : International Maritime Satellite 
8. QDA : Quick Deployment Antenna
9. ROT : Receive Only Terminals
10. ROIP : Radio Operate Internet Protocol
11. VOIP : Voice Of Internet Protocol
12. PSTN : Public Switch Telephone Network
13. MODEM : Modulation and De-Modulation
14. MBPS : Megabits Per Second
15. KBPS : Kilobits Per Second
16. GBPS : Gigabits Per Second
17. AM : Amplitude Modulation
18. FM : Frequency Modulation
19. EHF : Extremely High Frequency
20. DMR : Digital Mobile Radio
21. BOD : Based Bandwidth On Demand
22. PTT: Press To Talk