CFI
- CFI Financial Group
- Campus Front of India
- Canada Foundation for Innovation
- Canal France International
- Carolina Film Institute
- Center for Inquiry
- Colorado Fuel and Iron
- Common Flash Memory Interface
- Community Forests International
- Conservative Friends of Israel
- Consolidated Film Industries
- Continuous-flow intersection
- Contract Freighters, Inc.
- Control-flow integrity
- Corporate Finance Institute
- Court of First Instance (Hong Kong)
- Courts of First Instance of Peru
- IEEE 802.1Q
- ISO 10962
- Silicon Integration Initiative
- Trial court