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| KISS | Keep It Simple, Stupid | |
| KISS | Keep It Super Simple | |
| KISS | Keep It Short & Simple | |
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| KISS | Keep It Simple Silly | |
| KiSS | Kisekae Set System (Japanese language and culture) | |
| KISS | Keep It Simple, Sweetie | |
| KISS | Keep It Simple, Sweetheart | |
| KISS | Keep It Simple and Straightforward (design principle; more commonly seen as Keep It Simple, Stupid) | |
| KISS | KEK Information Service System (Tsukuba, Japan) | |
| KISS | Keep It Stupidly Simple | |
| KISS | Keep It Simple, Sir | |
| KISS | Keep it Simple, Smarty | |
| KISS | Keep It Simple Systems | |
| KISS | Keep It Simple, Students | |
| KISS | Keep It Simple, Statistically | |
| KISS | Keep It So Simple | |
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| KISS | Keep It Simple, Saint | |
| KISS | Keep It Simple & Safe (airline and aviation management) | |
| KISS | Kids Invite Someone Special | |
| KISS | Korean Intelligence Support System | |
| KISS | Keep It Simple and Systematic | |
| KISS | Kid's Identity Suddenly Sixteen (Kids Next Door show) | |
| KISS | Kristen Iteration Selection and Sequention (method) | |
| KISS | Kids In the Savior's Service | |
| KISS | Keep It Safe & Sound | |
| KISS | Keep It Super Secret | |
| KISS | Kes Internet Support Society (Ocampa Kes fan group; Star Trek Voyager) | |
| KISS | Keeping in Style Salon (Melcher, IA) | |
| KISS | Keep It Straight and Simple | |
| KISS | Keep It Small and Simple | |
| KISS | Keep It Simple, Sugar | |
| KISS | Keep It Sensible & Simple | |
| KISS | Keep It Short and Sweet | |
| KISS | Keep It Simple and Secular | |
| KISS | Keep It Simple and Stupid | |
| KISS | Keep It Simple, Spiritually | |
| KISS | Keep It Simple Solution | |
| KISS | King of Indiana Sprint Series (racing) | |
| KISS | Knights In Satan's Service | |
| KISS | Korea Information Science Society (South Korea) | |