| LEOS | IEEE Lasers & Electro-Optics Society 
| Others |
| LEOS | Leadership Education Opportunity and Service
| Others |
| LEOS | Leadership Effective Organized Service
| Others |
| LEOS | Leadership Experience Opportunity and Service
| Others |
| LEOS | Leadership Experience Opportunity Service
| Others |
| LEOS | Leadership Experience Opportunity These
| Others |
| LEOS | LinuxDA Embedded Operating System
| Others |
| LEOS | Lufthansa Engineering and Operational Services
| Others |