- A constructed language; see Lingua Franca Nova
- The ( U.S. ) acronym for a television series; see Nikita (La Femme Nikita )
- Long File Name, an enhanced standard to support long file names on FAT file systems, see File Allocation Table
- Logical File Name and Local File Name of the CDC operating systems of the computers in the Cyber series.
- Abbreviation for Long Fat Pipe Networks