Viacom, an acronym of Video & Audio Communications, may refer to:
- Viacom (1952–2006), an American media conglomerate
- Viacom (2005–2019), a company spun off from the original Viacom
- ViacomCBS, a corporation formed by the merger of the second incarnations of CBS Corporation and Viacom on December 4, 2019
- ViacomCBS Domestic Media Networks, the American television and publishing division of ViacomCBS
- ViacomCBS Networks International, the international television and publishing division of ViacomCBS
- ViacomCBS Networks Americas, the division of ViacomCBS Networks International in Latin America
- Viacom 18, the joint venture between ViacomCBS and TV18 in India
- Viacom18 Motion Pictures, the film division of Viacom 18
See also
- CBS Corporation (2006–2019), the legal successor to the original Viacom
- List of assets owned by ViacomCBS (since 2019), the company that formed by re-merger between second CBS Corporation and Viacom