| KIS | Kailua Intermediate School 
| Others |
| KIS | Kangaroo Island Spirits
| Others |
| KIS | Kannapolis Intermediate School
| Others |
| KIS | Kasperky Internet Security
| Others |
| KIS | Kaspersky Internet Security
| Others |
| KIS | Kaspersky Internet Suite
| Others |
| KIS | Keep It Safe
| Others |
| KIS | Keep It Secret
| Others |
| KIS | Keep It Short
| Others |
| KIS | Keep It Simple
| Others |
| KIS | Keep It Special
| Others |
| KIS | Keeping It SAFE
| Others |
| KIS | Keeping It Simple
| Others |
| KIS | Kenston Intermediate School
| Others |
| KIS | Kerbal Inventory System
| Others |
| KIS | Key Indicator of Success
| Others |
| KIS | Key Information Set
| Others |
| KIS | Key Information Sets
| Others |
| KIS | Key Investment Services
| Others |
| KIS | Keyless Ignition System
| Others |
| KIS | Keystone Interpreting Solutions
| Others |
| KIS | Kids Improving Security
| Others |
| KIS | Kill In Style
| Others |
| KIS | Killers In Server
| Others |
| KIS | Kilometers In Service
| Others |
| KIS | Kilrathi Imperial Spaceship
| Others |
| KIS | Kinabalu International School
| Others |
| KIS | Kinetic Imaging System
| Others |
| KIS | King Island Scheelite
| Others |
| KIS | KIS International School
| Others |
| KIS | Kiss in Internet Slang
| Others |
| KIS | Kissimmee Station (SunRail- AMTK)
| Others |
| KIS | Kitting Instruction Sheet
| Others |
| KIS | Knowbot Information Service
| Others |
| KIS | Knowledge Information Solutions
| Others |
| KIS | Knowledge Inspiration and Spirit
| Others |
| KIS | Knowledge Inspiration Spirit
| Others |
| KIS | Knowledge Intensive Services
| Others |
| KIS | Knowledge-Intensive Services
| Others |
| KIS | Kodaikanal International School
| Others |
| KIS | Konradi Insurance Services
| Others |
| KIS | Konstanz International Summerschool
| Others |
| KIS | Kootenay Internet Services
| Others |
| KIS | Korea International School
| Others |
| KIS | Korea Investment Securities
| Others |
| KIS | Korea Investors Service
| Others |
| KIS | Korean International School
| Others |
| KIS | Kunst In Serie
| Others |
| KIS | Kyiv International School
| Others |
| KIS | Kyoto International School
| Others |