- Language: Wayu
- Alternate names: Hayu, Vayu, Wayo, Vāyu
- Language code: vay
- Language family: Sino-Tibetan, Tibeto-Burman, Western Tibeto-Burman, Himalayan, Kiranti, Western (SIL classification)
- Number of speakers: 1520
- Vulnerability: Endangered
- Script: Devanagari script.
Strong Nepali (See: [[Nepali]]) influences in phonology, lexicon, and grammar (Matisoff 1991). Traditional religion, Hindu.
Wayu is spoken in Nepal, South Asia.