- CAID stands for Computer-Aided Industrial Design
- CAID stands for Convention of American Instructors of the Deaf
- CAID stands for Common App ID (Identification; college application)
- CAID stands for Chronic Airway-Digestive Inflammatory Disease
- CAID stands for Community Acquired Infections Division (Public Health Agency of Canada)
- CAID stands for Conservatives Against Intelligent Design (anti-creationism)
- CAID stands for Clear Accountability In Design
- CAID stands for Canadian Association for Information Science
CAID