Yau may refer to:
- Yau (surname), (Latinized) Cantonese surname
- Yau language, a Finisterre language of New Guinea
- Yau language (Torricelli), a Torricelli language of Papua New Guinea
- Hodï language (ISO 639-3: yau), a language of Venezuela
- Kattiniq/Donaldson Airport, near Raglan Mines, Quebec, Canada
- Yezin Agricultural University, Myanmar