| Acronym | Definition |
|---|
| ULF | Ultra Low Frequency (300-3000 Hz; 1,000-100 km) |
| ULF | Ultra Low Frequency |
| ULF | Universal Location Framework |
| ULF | Ultra-Low-Flush |
| ULF | United Leukodystrophy Foundation |
| ULF | Universite de Technologie et de Sciences Appliquees Libano-Francaise (French: Lebanese-French University of Technology and Applied Sciences; Lebanon) |
| ULF | Ultra-Low-Floor (tramway) |
| ULF | Ultra Large Format |
| ULF | Unsolved Latent File (fingerprints) |
| ULF | Ukrainian Legal Foundation |
| ULF | Unknown Life Form |
| ULF | Unit Load Former (machine which loads cases and shrinkwraps them together) |
| ULF | Unified Look and Feel |
| ULF | Un-Lock then Firing (STRPN transition) |