3S
# 3S

3S may refer to:

* 3S, for single, seventies/1970s, stuck, a slang form of sheng nu, a derogatory Chinese term referring to unmarried women in their mid to late twenties
* 3S gondola lift
* 3-S treatment, a method for dealing with unwanted or unwelcome animals in rural areas
* 3S, a series of Toyota S engines
* Air Antilles Express IATA airline designator
* 3S Supersonic gas separation, a brand name for a gas processing technology
* The S line of the Mazda3 automobile
* Threes (video game)
* In Geoinformatics, 3S means the combination of~
   * Geographic information system
   * Global Positioning System
   * Remote sensing
