IVC
- 4C (disambiguation)
- C4 (disambiguation)
- Ignatian Volunteer Corps
- Imperial Valley College
- Impington Village College
- In vitro compartmentalization
- In-vessel composting
- Individually ventilated cage
- Indus Valley Civilisation
- Inferior vena cava
- Inferior vena cava filter
- Inter-vehicle communication
- Interactive video compositing
- International Vale Tudo Championship
- International Video Corporation
- International Vocal Competition 's-Hertogenbosch
- Internet Video Coding
- Invacare
- Invercargill Airport
- Involuntary commitment
- Irvine Valley College
- Ivory Coast
- Oflag IV-C
- Vitamin C