| Acronym | Definition |
|---|
| RLHS | Red Land High School (Lewisberry, PA) |
| RLHS | Railway & Locomotive Historical Society |
| RLHS | Rio Linda High School |
| RLHS | Rice Lake High School (Wisconsin) |
| RLHS | Residence Life and Housing Services (Duke University) |
| RLHS | Red Lake High School (Minnesota) |
| RLHS | Round Lake High School |
| RLHS | Racine Lutheran High School (Wisconsin) |
| RLHS | Red Lodge High School (Montana) |
| RLHS | Red Lion High School (Pennsylvania) |
| RLHS | Random Lake High School (Wisconsin) |
| RLHS | Robert L. Horbelt School |
| RLHS | relative left hand superiority (coefficient; braille reading) |