EDCA may refer to:
- Enhanced Defense Cooperation Agreement, a mutual defense agreement between the United States and the Philippines
- Enhanced Distributed Channel Access, an operation mode of IEEE 802.11e-2005
- E.D.Ca., an abbreviation used for the United States District Court for the Eastern District of California
- Escadron de détection et de contrôle aéroporté, a French Air and Space Force aircraft squadron
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