| Acronym | Definition |
|---|
| KSS | Kirby Super Star (SNES game) |
| KSS | Kearns-Sayre Syndrome |
| KSS | Komunistická Strana Slovenska (Slovak Communist Party, Slovakia) |
| KSS | Knowledge Sharing System |
| KSS | Keystone State Skinheads (Pennsylvania) |
| KSS | Kirby Squeak Squad (gaming) |
| KSS | Kilo Symbols per Second |
| KSS | Key Stream Segment |
| KSS | Kilo Samples per Second |
| KSS | Kelowna Secondary School (Kelowna, BC, Canada) |
| KSS | Kipnis Studio Standard (entertainment) |
| KSS | Killarney Secondary School (Vancouver, Canada) |
| KSS | Kirtland Safety Society |
| KSS | Komputerowe Systemy Sterowania (Polish: Computer Control Systems) |
| KSS | Knowledge Sharing Session |
| KSS | Knowledge Support System |
| KSS | Kenosha Streetcar Society (Kenosha, Wisconsin) |
| KSS | Key Support Services (Canada) |
| KSS | Kid Sister Safe |
| KSS | Kranji Secondary School (Singapore) |
| KSS | Kanto Sanyo Semiconductors (Japan) |
| KSS | King Safety and Security Ltd. (security; UK) |
| KSS | Kentucky Sleep Society |
| KSS | Kouvolan Seudun Sähkö (Finland electric company) |
| KSS | Kommandor Subsea (survey vessel) |
| KSS | Knight of St. Sylvester (religious order) |
| KSS | KWPN (Koninklijk Warmbloed Paardenstamboek Nederland) Select Sale (horse auction) |
| KSS | Kukke Sri Subrahmanyeshwara (India college) |