| lid | LabelVision Auto Incrementing Value Data |
| lid | WinDVD LID Data |
| lidata | LiDAR360 Data |
| lif | Intuit TurboTax Information Archive |
| lif | LEGO Digital Designer Assets Data |
| life | Light Data |
| lig | Afm2pl Ligkern Specifications |
| lig | TSP-INet Server LIG Data |
| lightkeyfxt | Lightkey Fixture Data |
| lij | Apple Photos Data |
| lijs | Apple Photos Data |
| lim | LIMP Impedance Data |
| lime | Lattice QCD Interchange Message Encapsulation Data |
| lims | Liquid Injection Molding Simulation Data |
| lin | Autodesk AutoCAD Linetypes |
| lin | Bridge Base Online Hands Data |
| lin | LISCAD Line Styles Data |
| linf | LinF Source Code |
| link | ARIA Link Data |
| link | iPod Link Data |
| linx | Bridge Base Online Hands Data |
| linx | iPod Links Folder Data |
| lir | CAP42 License Request File |
| lis | LISREL Syntax Data |
| lis | SQR Printer Output |
| lis | Tekla Structures Exported Model |
| list | BlindWrite List Data |
| list | Microsoft Entourage 2008 Recipient List |
| list | PLINK Genotype List File |
| lit | Avantes Avasoft v8 Wavelength Coefficients Data |
