- C of A stands for Certificate of Analysis
- C of A stands for Certificate of Approval
- C of A stands for Centre of Attention (UK)
- C of A stands for Commonwealth of Australia
- COFA stands for College of Fine Arts (College of Fine Arts, University of New South Wales Sydney, Australia)
- C of A stands for Certificate of Airworthiness
- CofA stands for Certificate of Analysis
- CofA stands for Committee of Adjustment (zoning; various locations)
- COFA stands for Compliance Officer for Finance and Administration (UK)
- CofA stands for Certificate of Airworthiness
- COFA stands for Compact of Free Association
- COFA stands for City of Fallen Angels (Cassandra Clare novel)
- CofA stands for Commonwealth of Australia
- CofA stands for Coat of Arms
- COFA stands for Claire Oliver Fine Art (New York, NY)
- CofA stands for Change of Address
- COFA stands for Change Of Frame Alignment (SONET)
- COFA stands for California Organic Farmers Association (Kerman, CA)
- COFA stands for Christian Outdoor Fellowship of America
- COFA stands for Coupled Over Fire Air
- CofA stands for Central Otago Football Association (New Zealand)
- COFA stands for Content Flow Architecture (Cisco)
- COFA stands for Community Opportunity Foundation of Alberta
C of A