| KCS | Construction Services 
| Others |
| KCS | Kaleidoscope Charter School
| Others |
| KCS | Kanawha County Schools
| Others |
| KCS | Kangoo Club Singapore
| Others |
| KCS | Kankakee County Speedway
| Others |
| KCS | Kannapolis City school
| Others |
| KCS | Kannapolis City Schools
| Others |
| KCS | Kansas City Southern
| Others |
| KCS | Kansas City Standard
| Others |
| KCS | Katalog Ciekawych SE
| Others |
| KCS | Kautilyashree Central School
| Others |
| KCS | Kedah Civil Service
| Others |
| KCS | Kelisa Club Singapore
| Others |
| KCS | Kendall Christian School
| Others |
| KCS | Kenton City Schools
| Others |
| KCS | Kentuckiana Chinese
| Others |
| KCS | KeratoconjunCtivitis Sica
| Others |
| KCS | Kerridge Commercial Systems
| Others |
| KCS | Keyboard Configuration Studies
| Others |
| KCS | Keyboard Controlled Sequencer
| Others |
| KCS | Keyboard Controller Style
| Others |
| KCS | Kia Club Series
| Others |
| KCS | Kia Customer Service
| Others |
| KCS | Killed Carbon Steel
| Others |
| KCS | Killer Clown Society
| Others |
| KCS | King Charles Spaniel
| Others |
| KCS | Kings Creek Station, Northern Territory, Australia
| Others |
| KCS | Kingsport City Schools
| Others |
| KCS | Kit Car Show
| Others |
| KCS | Kiva C Plus Plus Server
| Others |
| KCS | Knock Control System
| Others |
| KCS | Knowing the Claim Status
| Others |
| KCS | Knowledge Center Software
| Others |
| KCS | Knowledge Centered Service
| Others |
| KCS | Knowledge Centered Support
| Others |
| KCS | Knowledge Centred Service
| Others |
| KCS | Knox County Schools
| Others |
| KCS | Kokomo Confidential Shredders
| Others |
| KCS | Kokusai Cable Ship
| Others |
| KCS | Kolmogorov Chaitin Solomonoff
| Others |
| KCS | Kombi Clube Sorocaba
| Others |
| KCS | Korea Championship Series
| Others |
| KCS | Korean Chemical Society
| Others |
| KCS | Korean Community Services
| Others |
| KCS | Kustom Cars Shop
| Others |
| KCS | Kuwait Computer Services
| Others |
| KCS | Kuwait Computer Society
| Others |