C
- C-Day - The unnamed day on which a deployment operation begins or is to begin
- C2 - Command and Control
- C4ISR - Command, Control, Communications, Computers, Intelligence, Surveillance, and Reconnaissance
- CA - Combat Arms
- CAF - Combat Air Force
- CAI - Computer Aided Instruction
- CAOC - Combined Air and Space Operations Center
- CAMS - Core Automated Maintenance System (database behind IMDS)
- CAP - Civil Air Patrol
- Capt - Captain
- CAS - Close Air Support
- CAT - Crisis Action Team
- CATM - Combat Arms Training and Maintenance
- CBMC - Communications Battlespace Management Course
- CBT - Computer Based Training
- CBRNE - Chemical, Biological, Radiological, Nuclear, and High Yield Explosives
- CC - Commander
- CCAF - Community College of the Air Force
- CCE - Executive Officer
- CCF - First Sergeant
- CCT - Combat Control
- CDC - Career Development Course
- CEG - Combat Evaluation Group
- CES - Civil Engineering Squadron
- CEVG - Combat Evaluation Group
- CFEPT - Career Field Education and Training Plan
- CFR - Crash Fire Rescue
- CFT - Cockpit Familiarization Trainer
- CGO - Company Grade Officer (lieutenants and captains)
- CGOC - Company Grade Officers' Council
- Charlie Foxtrot - Cluster Fuck
- CI - Counterintelligence, Compliance Inspection
- Class Six - Shoppette where beer, wine & liquor is sold.
- CMO - Civil-Military Operations
- CMSAF - Chief Master Sergeant of the Air Force
- CMSgt - Chief Master Sergeant
- CNA - Computer Network Attack
- CND - Could Not Duplicate
- CND - Computer Network Defense
- CNO - Computer Network Operations
- CNT - Counter Narco-Terror
- COA - Course of Action
- Col - Colonel
- COLA - Cost of Living Adjustment
- COMINT - Communications Intelligence
- CONOPS - Concept of Operations
- CONS - Contracting Squadron
- CONUS - Continental United States
- COMAFFOR - Commander, Air Force Forces
- Cop - Term for Air Force Security Forces
- COT - Commissioned Officer Training
- CPF - Civilian Personnel Flight
- CPTS - Comptroller Squadron
- CS - Communications Squadron
- CSAF - Chief of Staff of the Air Force
- CSAR - Combat Search and Rescue
- CSS - Commander's Support Staff (orderly room)
- CUI - Combined Unit Inspection
Read more about this topic: List Of U.S. Air Force Acronyms And Expressions