QS may refer to:
Business QS mark (for "quality and safety"), on Chinese products Quacquarelli Symonds, an education and careers networking company QS World University Rankings, an annual publication Quality System (QS) Regulation, a business process Quantity surveyor, a professional in the construction industry concerned with costs and contracts Travel Service (IATA airline designator QS) Quadraphonic sound, the Sansui QS Regular Matrix system
Politics Québec solidaire, a political party in Quebec, Canada Quis separabit?, an Irish Loyalist motto
Science, technology, and mathematics Biology and medicine ATCvet code QS Sensory organs, a section of the Anatomical Therapeutic Chemical Classification System for veterinary medicinal products Quantum satis, a Latin term meaning "the amount which is needed", used in food and drug regulation Quinolinate synthase, an enzyme Quorum sensing, a system of interaction in natural and synthetic populations
Computing and mathematics Quadratic sieve, an integer factorization algorithm Quality Score, a variable used by search engines to set the rank and cost of ads Quicksort, a sorting algorithm
Other uses in science and technology Quadraphonic sound, or "Quadphonic Synthesizer", a matrix quadraphonic gramophone record format developed by Sansui Quantified self, a movement to incorporate technology into data acquisition on aspects of a person's daily life Quicksand, a colloid hydrogel consisting of fine granular material and water
Sport Quality start, a baseball statistic calculated for starting pitchers Qualcomm Stadium, a stadium in San Diego, California
Other uses Qualifications Scotland, a Scottish Government public body Queen's Scout, a scout who has attained the Queen's Scout Award Queen's Serjeant, an obsolete legal position in the United Kingdom
See also Cue (disambiguation) Q (disambiguation) Queue (disambiguation) QZ (disambiguation) SQ (disambiguation)