| Acronym | Definition |
|---|
| LRTA➣Light Rail Transit Association |
| LRTA➣Light Rail Transit Authority (Philippines) |
| LRTA➣Lowell Regional Transit Authority (Massachusetts) |
| LRTA➣Labor Responds to AIDS |
| LRTA➣Lowcountry Regional Transportation Authority (South Carolina) |
| LRTA➣Los Angeles Retired Teachers' Association |
| LRTA➣Lamp Rapid Thermal Anneal (heating method) |