- DTRR stands for Department of Tourism and Renewable Resources (Canada)
- DTRR stands for Direct-to-Reverberant Ratio (speech)
- DTRR stands for Downtown Round Rock (Texas)
- DTRR stands for Division of Treatment and Recovery Research (US NIAAA)
- DTRR stands for Developmental Test Readiness Review
- DTRR stands for Development Test Readiness Review
DTRR