- C2D2 stands for Cleanup Criteria/Decision Document
- C2D2 stands for Canadian Community on Dialogue and Deliberation
- C2D2 stands for Command and Control Development Division (USAF)
- C2D2 stands for Command & Control Domain-Directed
- C2D2 stands for Climate Change Data and Detection
- C2D2 stands for Cruiser Conversion Definition Document (US Navy)
Abbreviations And Their Meaning