VCS may refer to:
In gaming:
- Atari VCS, the first successful video game console to use plug-in cartridges instead of having one or more games built in
- Grand Theft Auto: Vice City Stories, an installment in the Grand Theft Auto video game series
In technology:
- Veritas Cluster Server, a commercial high-availability computer clustering system
- Version control system, a system for managing multiple revisions of the same unit of information
- Microsoft Visual C#, a programming language (this initialism is used internally by the software)
- Voice Communication System, a type of radio communication system
- VOIP Connection Server, a computer server hosting Voice over Internet Protocol service
- Tandberg Video Communication Server
- VeriSign Communications Services
- Nvidia Quadro Plex Visual Computing System
- Synopsys vcs - a Verilog language simulation program for chip design
- Voice Changer Software, a type of voice changer
- VCalendar file format, designed to store events, TO-DOs, meetings, anniversaries and appointments.
- VCS AG German company, owned by SciSys, producing broadcasting and satellite technology.
In other fields:
- The Villages Charter Schools, a state charter school in Sumter County, Florida, United States
- Valley Christian School, a private university preparatory school in Dublin, California, United States.
- Vancouver Christian School, a private elementary and middle school in Vancouver, British Columbia, Canada.
- VCS AG, a German corporation, now a subsidiary of SciSys.
- Victoria Coach Station, the largest and most significant coach station in London, England.
- Vienna Christian School, a private fundamentalist Christian missionary school in Vienna, Austria.
- Vietnamese Council of State, the highest standing body of the National Assembly of Vietnam.
- Volusia County Schools, a school district in Florida, United States.
- Virginia class submarine, the latest US nuclear attack submarine.
- Voluntary Carbon Standard and emissions reduction standard for green house gasses.
- Voluntary and Community Sector, a term used for the voluntary sector or third sector.