| uea | Protector Suite QL Encrypted Archive |
| ueed | Uconomix Encryption Engine Encrypted Directory |
| uexp | UE Viewer Package |
| ufa | UFA Compressed Archive |
| uha | UHarc Archive |
| uharc | UHarc Archive |
| ums | Dragon UnPACKer 5 Archive |
| upx | UPX Compressed File |
| ustar | Tape Archive |
| utoc | Unreal Engine 4 Archive Metadata |
| uws | UniTrader 2006 Website Archive |
| uwt | UniTrader Website Template Archive |
| uze | UltimateZip Compressed Archive |
| uzip | FreeBSD Compressed Disk Image |
| vad | Virtuoso Application Distribution Package |
| varc | Havok Vision Engine Archive |
| vbk | Veeam Full Backup Archive |
| vbm | Veeam Backup Metadata File |
| vcab | VidyoConnect Log Archive |
| vcb | VMware Consolidated Backup Archive |
| vcn | Vacon NCDrive Package |
| vdf | Valve Steam Data File |
| vem | Micro Vault Virtual Expander File |
| vfs2 | NUVICO EasyNet Backup Data |
| vfs3 | NUVICO EasyNet Backup Data |
| vfs4 | NUVICO EasyNet Backup Data |
| vhb | Renee Becca Backup Archive |
| via | Viz Artist v3 Archive |
| vib | Veeam Incremental Backup Archive |
| vib | VMware vSphere Installation Bundle Package |
