| zfx | ZFX Archive |
| zgz | Zimbra Compressed Package |
| zi | Renamed Zip |
| zip | ZIP Archive |
| zipe | Minecraft ZIPE Archive |
| zipx | WinZIP ZIPX Archive |
| zl | Zlib Compressed Data |
| zlib | Zlib Compressed Data |
| zom | Amiga Zoom Compressed Archive |
| zoo | Zoo Compressed Archive |
| zpaq | ZPAQ Compressed Archive |
| zpg | ZQuest Editor Graphics Pack |
| zpi | Zipped |
| zpkg | Zyxel NSA-32x Application Package |
| zpp | ZPanel Package |
| zps | Zebra Portable Safe File |
| zpw | ZippedWeb Archive |
| zrp | VMware VCM UNIX Agent ZRP Archive |
| zsplit | Incredible Bee Archiver ZipSplit File |
| ztc | Vijeo Designer Exported Toolchest Folder |
| ztmp | Valve Steam Compressed Game Resource |
| zz | Zzip Compressed Archive |
