| Acronym | Definition |
|---|
| LSDI➣Lubombo Spatial Development Initiative (South Africa) |
| LSDI➣Line Scan Diffusion Imaging (radiology) |
| LSDI➣Lighting Systems Design, Inc. (est. 1983; Orlando, FL) |
| LSDI➣List Service Direct, Inc. (Leonia, NJ) |
| LSDI➣Lilly Summer Discernment Institute (est. 2002; Sewanee: The University of the South; Sewanee, TN) |
| LSDI➣Leitch Systems Design Inc. (Canada) |