Hochdeutsch is a German word which literally translates to "High German" and may refer to:
- High German languages or High German dialects (hochdeutsche Mundarten), today mostly called Upper German dialects (oberdeutsche Mundarten)
- Standard German, the standardized variety of the German language, which encompasses:
- Bundesdeutsches Hochdeutsch or German Standard German
- Österreichisches Hochdeutsch or Austrian Standard German
- Schweizer Hochdeutsch or Swiss Standard German