| lgc | Microsoft Windows Application Log |
| lgc | SimpleK Database |
| lgd | Autodesk Simulation Mechanical DDAM Statistics Data |
| lgd | Microsoft Windows Application Log |
| lge | BallStat League Data |
| lgen | PLINK Long-format Genotype File |
| lgf | LeechGet FTP Queue |
| lgf | Microsoft Windows Application Log |
| lgg | Microsoft Windows Application Log |
| lgh | Intouch HMI Historical Log File |
| lgh | Microsoft Windows Application Log |
| lgh | Pro/ENGINEER Light Data |
| lgi | Multimedia Logic Data |
| lgl | Large Graph Layout Edge File |
| lgn | Microsoft Windows Application Log |
| lgn | OptionVue Portfolio Manager Log Notes |
| lgpl | GNU GPL License Data |
| lgq | Microsoft Windows Application Log |
| lgt | Vaisala LTraX Data |
| lgv | Windows Logger Log |
| lgw | ANSYS Saved Log |
| lgz | SmartOS Compressed Loopback Image |
| lgz | Windows Application Log |
| lh | LayaAir Sprite3D Data |
| lhd | ERL Server Database |
| lhi | ERL Server Index Data |
| lhi | TOPOG Landslide Hazard Index Data |
| lhm | ERL Server Metadata |
| lhp | Lighthouse Organizer Data |
| lhr | Intuit Quicken Financial Life for Mac File |
