Its

ITS, its or it's may refer to:

Language

 * It's, an English contraction of it is or it has
 * Its (pronoun), the possessive form of the pronoun it

Arts and entertainment

 * Improvisational Tribal Style, a subgenre of Tribal Style belly dance
 * It's (EP), by Teen Top, 2012

Businesses

 * Illinois Traction System, an American railroad
 * Industrial Tomography Systems, a manufacturer of process visualization systems based upon the principles of tomography
 * International Transportation Service, an American container terminal company

Education

 * Indian Theological Seminary, an interdenominational seminary in India
 * Sepuluh Nopember Institute of Technology (Institut Teknologi Sepuluh Nopember), a public engineering university in Surabaya, Indonesia
 * Institute for Transport Studies, University of Leeds (ITS Leeds)
 * Institute of Technological Studies, Sri Lanka
 * Institute of Technology, Sligo, Ireland
 * Institute of Transportation Studies, University of California Berkeley, Davis, Irvine and Los Angeles

Organizations

 * Identity, Tradition, Sovereignty, a former political grouping in the European Parliament
 * Indian Telecommunication Service, an organised civil service of Government of India
 * Indian Trade Service
 * International Thespian Society, an honorary organization for high school and middle school theatre students
 * International Tracing Service
 * International trade secretariat
 * International Typographers' Secretariat, a former international trade secretariat
 * Irish Texts Society, promoting the study of literature
 * Irish Thoracic Society
 * Islamic Texts Society, an educational charity based in Cambridge, UK
 * Islamic Thinkers Society
 * Individualists Tending to the Wild (Individualistas Tendiendo a lo Salvaje), an eco-extremist terrorist group in Mexico

Computing

 * Incompatible Timesharing System, a computer operating system
 * Intelligent tutoring system, an artificial intelligence system used for tutoring
 * Internationalization Tag Set, a W3C recommendation for internationalizing XML
 * Issue tracking system, computer software that manages product issues

Other science and technology

 * Inverse transform sampling, a method for generating random numbers from various probability distribution
 * Integrated Truss Structure, a component of the International Space Station
 * Intelligent transportation system, transportation infrastructure information technology
 * Internal transcribed spacer, a section of DNA located within a set of ribosomal genes
 * Interplanetary Transport System, a project by SpaceX to develop a system capable of transporting humans and cargo to Mars and other destinations in space
 * Interrupted time series, a time series of data known to be affected by interventions