| Acronym | Definition |
|---|
| FLHS | Fair Lawn High School (Fair Lawn, New Jersey) |
| FLHS | Fox Lane High School |
| FLHS | Francis Lewis High School (New York) |
| FLHS | Fairfield Ludlowe High School (Fairfield, Connecticut) |
| FLHS | Forest Lake High School (Forest Lake, MN) |
| FLHS | Fort Lee High School (Fort Lee, NJ) |
| FLHS | Foreign Language High School |
| FLHS | Fort Lauderdale Historical Society |
| FLHS | Faith Lutheran High School (Marengo, IL) |
| FLHS | Ft. Lauderdale High School (Florida) |
| FLHS | Forest Lawn High School (Calgary, Alberta) |
| FLHS | Harley-Davidson Electra Glide Sport Model Motorcycle |