Bily may refer to:
- Laurence Bily, French sprinter
- Sydir Bily, Ukrainian Cossack
- Bilyi, a different transliteration of the same Ukrainian surname
Bílý (feminine Bílá) is a Czech surname meaning "white". It may refer to:
- Josef Bílý, Czech general
- Lucie Bílá, Czech singer
- Věra Bílá, Czech singer