RLSD
| Acronym | Definition |
|---|---|
| RLSD | Remote Line Signal Detect |
| RLSD | Received Line Signal Detector |
| RLSD | Received Line Signal Detect (signal line) |
| RLSD | Random Lake School District (Wisconsin) |
| RLSD | Richard Lees Steel Decking (Derbyshire, East Midlands, England, UK) |
| RLSD | Rigid-Lock Stack Down (subsea drilling system) |
| RLSD | Red Lake School District (Red Lake, MN) |
| RLSD | Research and Laboratory Services Division (United Kingdom) |