KS

KS may refer to:

• Kampfschwimmer, a German postwar commando frogman force
• Kartagener syndrome, rare genetic disorder which causes a defect in the action of the cilia
• Kamehameha Schools, independent school
• Kansas (United States postal abbreviations)
• Kaposi's sarcoma, tumor caused by Human herpesvirus 8 (HHV8)
• Kaplan-Sheinwold, bidding system in the game of contract bridge
• Kashmiri language (ISO 639 alpha-2: ks), Dardic language spoken primarily in the valley of Kashmir
• Keratan sulfate, any of several sulfated glycosaminoglycans
• Kernel streaming, method of processing streamed data
• Kearny System, a parts numbering scheme developed for a Western Electric factory in Kearny, New Jersey
• Kernowek Standard, an orthography for Revived Cornish
• Key Stage in the UK education system
• Kiasu, Hokkien (a Chinese spoken variant) word for 'extreme fear of losing' (怕输)
• Kill stealing, practice in online games of stealing the rewards for defeating an enemy from other players
• Kimbo Slice, Bahamian American mixed martial arts fighter
• Kilosecond (ks), 1000 seconds (16 minutes, 40 seconds)
• King's Scholar, scholar of Eton College denoted by the letters "KS" after the name in school lists
• King's Serjeant, obsolete legal position in the United Kingdom
• Klaus Schulze, a German electronic music composer and musician
• Klinefelter's Syndrome, condition caused by a chromosome aneuploidy—affected males have an extra X sex chromosome
• Kolmogorov–Smirnov test, goodness-of-fit test used for underlying probability distributions
• Komandittselskap, Norwegian type of company
• Kosovo, a disputed territory in the Balkans
• PenAir (IATA code: KS), Peninsula Airways, American airline based in Anchorage, Alaska
• Katawa Shoujo, an English bishoujo-style visual novel by Four Leaf Studios

Ks can also refer to:

• Ks, strikeouts in baseball
• Ks (plural of K), legal shorthand for Contract