| Acronym | Definition |
|---|
| CTTR | Chained to the Rhythm (Katy Perry song) |
| CTTR | Crash Tag Team Racing (video game) |
| CTTR | Combined Tactical Training Range (defense) |
| CTTR | California Tumor Tissue Registry (Loma Linda University; Loma Linda, CA) |
| CTTR | Centre for Transnational and Transcultural Research (University of Wolverhampton; UK) |
| CTTR | Connection Traffic Table Row (Cisco IOS for configuring ATM connections) |
| CTTR | Center for Transportation Training and Research (Texas Southern University) |
| CTTR | Cincinnati Transplant Tumor Registry (Cincinnati, OH) |
| CTTR | Cipher Text Terminal Ready |