| Acronym | Definition |
|---|
| IC3 | Internet Crime Complaint Center |
| IC3 | Internet and Computing Core Certification |
| IC3 | Integrated Command, Control, and Communications (US DoD) |
| IC3 | Inner Circle Clothing Company (est. 2006) |
| IC3 | Issachar Church Growth and Development Conference |
| IC3 | Black Person (UK police radio code) |
| IC3 | Interagency Complex Care Coordination (various organizations) |
| IC3 | InterCity 3 (Danish train) |
| IC3 | Interior Communications Electrician Third Class (naval rating) |
| IC3 | Internet Credit Card Collections (FMS US Deptartment of Treasury) |