Wain/Wani may mean:
- Vani (custom), a child marriage custom in tribal areas of Pakistan
- Wani, Maharashtra, a city and a municipal council in Yavatmal district in the Indian state of Maharashtra
- Wani (scholar), a legendary scholar who is said to have been dedicated to Japan by Baekje during the reign of Emperor Ōjin
- Wani (dragon), a Japanese dragon translated as "sea monster", "crocodile", or "shark"
- Wani (caste), a caste in Maharashtra, India
- Mangifera caesia, Wani (in Indonesian) is a fruit that resembles the mango but with white flesh.
- Wani Books