RTSD
| Acronym | Definition |
|---|---|
| RTSD | Radnor Township School District (Wayne, PA) |
| RTSD | Resources and Technical Services Division (American Library Association) |
| RTSD | Rebuilding Together San Diego (formerly Christmas in April; California; est. 1995) |
| RTSD | Railroad Transportation Safety District (Nebraska) |
| RTSD | Real-Time Software Design (course) |
| RTSD | Richardton-Taylor School District (North Dakota) |