TCS

TCS most commonly refers to:
 * Tata Consultancy Services, a multinational IT company headquartered in India

TCS may also refer to:

Organisations

 * Taxpayers for Common Sense, a US nonpartisan federal budget watchdog organization
 * TCS (logistics company), a Pakistani logistics company
 * Touring Club Suisse, a Swiss automobilists' organization
 * Trade Commissioner Service, part of the Canadian Department of Foreign Affairs and International Trade
 * Trilateral Cooperation Secretariat, between China, Japan, and South Korea

Schools

 * Tallassee City School District (Tallassee City Schools), Alabama, US
 * Tallavana Christian School, Florida, US
 * The Covenant School (disambiguation)
 * Tokyo Chinese School, Japan
 * Townsville Cathedral School, Australia
 * Trinity Christian School (disambiguation)
 * Trinity College School, Canada
 * Teignmouth Community School, Uk

Media

 * Telecorporación Salvadoreña, a television network in El Salvador
 * Television Corporation of Singapore, now part of MediaCorp TV
 * Terrestrial Trunked Radio (Tetra Connectivity Server) from Cassidian
 * The Cambridge Student, a Cambridge University student newspaper
 * TCS Daily, a former online magazine
 * Twentieth Century Studios, an American film studio

Science and technology

 * Tethered spinal cord syndrome, a group of neurological disorders
 * Treacher Collins syndrome, a genetic disorder
 * Theoretical computer science, a subset of general computer science and mathematics
 * Theoretical Computer Science, a scientific journal about the above topic
 * Tactical Control System, protocols for unmanned aerial vehicles
 * DEC Technical Character Set, a character set supported by various DEC terminals
 * Test Case Specification, as defined in IEEE 829
 * Thermal control subsystem
 * Track control system
 * Traction control system
 * Centralized traffic control or traffic control system, in North American railroading
 * TV Camera Set, Northrop Corporation AAX-1 optical system,
 * Trichlorosilane, an inorganic chemical compound
 * Time/Temperature Control for Safety Foods

Other uses

 * Taking Children Seriously, a parenting movement and educational philosophy
 * Teaching Company Scheme or Knowledge Transfer Partnerships, a part UK government-funded programme
 * Torres Strait Creole has the ISO 639 code tcs
 * Turkish Cypriots (TCs)