Z20 could refer to:
- Colt Plus Z20, an automobile model
- DiMAGE Z20, a camera model
- German destroyer Z20 Karl Galster, a German destroyer
- Harbin Z-20, a class of Chinese helicopter
- New South Wales Z20 class locomotive, a class of Australian steam locomotives
- Nissan Z20S, an automobile engine model
- Z20 series, an automobile model
- Nubia Z20, a mobile phone