| DECA | Delta Epsilon Chi Association | Delta Epsilon Chi协会 |
| DECA | Debt Education and Counseling Association (Fredericktown, OH) | 债务教育和咨询协会（俄亥俄州弗雷德里克敦） |
| DECA | Danish Enterprise and Construction Authority (Denmark) | 丹麦企业和建筑管理局（丹麦） |
| DECA | Defense Economic Cooperation Agreement | 国防经济合作协定 |
| DECA | Development of Espionage, Counterintelligence and Counterterrorism Awareness (now Awareness of National Security Issues | 发展间谍、反情报和反恐意识（现在是国家安全问题意识 |
| DECA | Defense Commissary Agency | 国防部军粮局国防给养局 |
| DECA | Distributive Education Clubs of America | 美国分布式教育俱乐部 |
| DECA | Defense and Economic Cooperation Agreement | 国防与经济合作协议 |
| DECA | Digital Electronic Countermeasures Analyser | 数字电子对抗分析仪 |
| DECA | Defense Commissary Agency (US DoD) | 国防委员会（美国国防部） |
| DECA | Digital Electronic Control Assembly | 数字电子控制组件 |
| DECA | Department of Education and Curriculum Affairs | 教育和课程事务部 |