KSS

• Kelowna Secondary School, in British Columbia, Canada
• Kibuli Secondary School, in Uganda
• Kingsmill Secondary School, a former high school in Etobicoke, Ontario
• Kingston Secondary School, in Kingston, Ontario, Canada
• Klahowya Secondary School, in Silverdale, Washington
• Knightswood Secondary School, in Glasgow, Scotland
• Kranji Secondary School, in Choa Chu Kang, Singapore
• Kwalikum Secondary School, in British Columbia, Canada

• Kalyana Samayal Saadham, a 2013 Indian film
• Kirby: Squeak Squad, a 2006 Nintendo DS game
• Kirby Super Star, a 1996 SNES game
• Kirby's Star Stacker, a 1997 Game Boy game

• Basketball Federation of Serbia (Serbian: {{lang|sr|Кошаркашки Савез Србије}}/ {{lang|sr-Latn|Košarkaški Savez Srbije}})
• Communist Party of Slovakia (since 1992) (Slovak: {{lang|sk|Komunistická strana Slovenska}})
• Communist Party of Slovakia (1939) (1939–1990) (Slovak: {{lang|sk|Komunistická strana Slovenska}})
• Kata'ib Sayyid al-Shuhada, an Iraqi Shia militia
• Kearns–Sayre syndrome, a disease caused by mitochondrial DNA deletion
• Key Safety Systems, now known as Joyson Safety Systems
• Keystone State Skinheads, a white nationalist group in Pennsylvania
• Khitan small script, an undeciphered Chinese script
• Khwarizmi Science Society, a scientific society in Pakistan
• Kinetic Style Sheets, an AJAX framework for the software Plone
• Kirtland Safety Society, a defunct Mormon bank in Kirtland, Ohio
• Kissi language (ISO 639 code: kss)
• Kristiania Sporveisselskab, a defunct tram company in Oslo, Norway
• {{Nihongo|KSS (company)|ケイエスエス}}, a Japanese anime studio
• KSS Design Group, an architecture design group
• Kudumbi Seva Sanghom, an Indian organisation; see Kudumbi
• The postnominal letters for a papal Knight of the Order of St. Sylvester
• Sikasso Airport (IATA airport code: KSS) in Mali
• Velocette KSS, a British motorcycle
• Kurdish Sorani Standard Bible
• Kochi Sun Sun Broadcasting, a Japanese commercial broadcaster

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