VTL
VTL stands as an abbreviation for:
- Velocity Template Language , double crosses ("#") introduce the placeholders to be filled, double double crosses ("##") begin comments and dollar signs ("$") serve to mark references, see Apache Velocity # Velocity Template Language
- Networked transport logistics , a leading general cargo cooperation and provider of Europe-wide logistics solutions, based in Fulda, see transport network structure # hub-spoke systems
- Virtual tape library , a storage device based on a disk array, which externally emulates a tape library