| Acronym | Definition |
|---|
| TCCN | Texas Common Course Numbering |
| TCCN | Technisch Creatief Centrum Nijmegen (Dutch: Nijmegen Creative Technical Center; science and technology workshops; Netherlands) |
| TCCN | The Cancer Council NSW (New South Wales; Australia) |
| TCCN | Stichting Teledermatologisch Consultatie Centrum Nederland (Dutch: Netherlands Foundation for Dermatological Teleconsultation Center; Heerenveen, Netherlands) |
| TCCN | The Classic Cougar Network (archive) |
| TCCN | Tennessee Coordinated Care Network (health management organization; Nashville, TN) |