LKS may refer to:
- A graffiti crew from South Central Los Angeles, California.
(Last Known Soldiers)
- Abbreviation of links, plural of a unit of length used by surveyors, 0.66 feet
- LKS, not realised spaceplane based on Proton-K launcher and proposed by Soviet Vladimir Chelomey space company
- Lambda Kappa Sigma, Fraternity
- Landau Kleffner Syndrome, childhood loss of speech faculty
- ŁKS Łódź, Polish sports club