KSS may refer to:
Education 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
Entertainment 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
Other Basketball Federation of Serbia (Serbian: / ) Communist Party of Slovakia (since 1992) (Slovak: ) Communist Party of Slovakia (1939) (1939–1990) (Slovak: ) 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 partly 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 , 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 television station in Kochi Prefecture, Japan KSS, the Korean Attack Submarine program