| zna | Zinio Annotation File |
| zncn | RMCProfile Zinc Neighbours Data |
| znl | Number Lines Lesson Data |
| znm | ZBrush NoiseMaker Data |
| zof | Zemax Object Format File |
| zon | Verity Collection Building Custom Zone |
| zon | OmniPage Zone Template |
| zone | ISC Bind Zone Data |
| zot | Zoot Information Processor Database |
| zpa | Vielklang Audio Metadata |
| zpac | Marvelous Designer 3D Garment |
| zpc | ZappR Compiled Patch |
| zpic | Zoom Player Install Center Text Data |
| zpicd | Zoom Player Install Center Component Database Text |
| zpk | ShipRush Shipping Template |
| zpl | Zemax Programming Language Source Code |
| zpr | ZappR Patch |
| zprj | ArcSoft Print Creations Template |
| zpx | MapOCX Pro Data |
| zrc | Rainlendar Compressed Resources File |
| zrd | Zemax Ray Database File |
| zre | ISOMAP Import Data |
| zrl | ZR FileWorks List |
| zs0 | ZSNES Save State |
| zs1 | ZSNES Save State |
| zs2 | ZSNES Save State |
| zs3 | ZSNES Save State |
| zs4 | ZSNES Save State |
| zs5 | ZSNES Save State |
| zs6 | ZSNES Save State |
| zs7 | ZSNES Save State |
| zs8 | ZSNES Save State |
| zs9 | ZSNES Save State |
| zsig | Regina Signature List |
| zsk | Zoner Media Explorer Skin |