Voltaic may refer to:
- Alessandro Volta (1745–1827), Italian physicist, chemist, and electricity pioneer
- Voltaic pile, the first electrical battery
- Electricity from an electrochemical cell or battery
- Voltaïc, releases from Björk's album, Volta
- Volta River, a river in west Africa
- Upper Volta, a colony and nation now known as Burkina Faso
- Gur languages, a subfamily of Atlantic-Congo languages formerly known as the Voltaic languages