| K.S.S. | Knight, Order of Saint Sylvester, Pope 
| Others |
| KSS | Camshaft Super Sport
| Others |
| KSS | Karabinek Samopowtarzalny Simonowa
| Others |
| KSS | Kaspersky Security for Storage
| Others |
| KSS | Kaspersky Security Scan
| Others |
| KSS | Katalysator Startheizungssystem
| Others |
| KSS | Kearns Sayre Syndrome
| Others |
| KSS | Kelsall Swiftbuild Sandwich
| Others |
| KSS | Kelsall Swiftsure Sandwich
| Others |
| KSS | Kentucky School Service
| Others |
| KSS | Kentucky Sleep Society
| Others |
| KSS | Key Safety Systems
| Others |
| KSS | Key Stream Segment
| Others |
| KSS | Kidney Stone Squirm
| Others |
| KSS | Kim Soo Squad
| Others |
| KSS | Kinesiology and Sport Science
| Others |
| KSS | Kingston State School
| Others |
| KSS | Kirby Super Star
| Others |
| KSS | KLM, SAS, SwissAir
| Others |
| KSS | Knock Sensor System
| Others |
| KSS | Knowledge Savoir Saber
| Others |
| KSS | Knowledge Sharing Shop
| Others |
| KSS | Knyle Style Sheets
| Others |
| KSS | Kohn Sham Structure
| Others |
| KSS | Konami Sound System
| Others |
| KSS | Korean Statistical Society
| Others |
| KSS | Kranji Secondary School
| Others |
| KSS | Kuwait Standard Specification
| Others |
| KSS | Kwantlen Second Semester
| Others |