Its

ITS, its or it's may refer to:

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

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
• Inter-Plan Teleprocessing System, a processing systems used by Blue Cross and Blue Shield Plans to facilitate co-ordination of health insurance when a patient is outside his or her home state.

Entertainment

• "It's" man, a man with torn clothes and unkempt beard who appeared at the beginning of episodes of Monty Python's Flying Circus
• Improvisational Tribal Style, a subgenre of Tribal Style belly dance
• It's (album), an album by Teen Top

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
• Irish Texts Society, promoting the study of literature
• Irish Thoracic Society
• Islamic Texts Society, an educational charity based in Cambridge, UK
• Islamic Thinkers Society
• International Transportation Service, an American container terminal company

Education

• Institute for Transport Studies, University of Leeds, often abbreviated to ITS Leeds
• Institute of Technology, Sligo, Ireland
• Institut Teknologi Sepuluh Nopember, a public engineering university in Surabaya, Indonesia
• Institute of Technological Studies, in Sri Lanka
• Indian Theological Seminary, an interdenominational seminary situated in Chennai, Tamil Nadu, South India

Science and engineering

• Industrial Tomography Systems, a manufacturer of process visualization systems based upon the principles of tomography
• Integrated Truss Structure, a component of the International Space Station
• Intelligent transportation system, or intelligent transport systems and services, which add information technology to the transportation infrastructure
• Internal transcribed spacer, a section of DNA located within a set of ribosomal genes
• International Temperature Scale of 1990 (ITS-90), a temperature calibration standard for measurements in units of kelvin and degrees Celsius
• Interplanetary Transport System, a project by SpaceX to develop a system capable of transporting humans and cargo to Mars and other destinations in space.

Business

• Illinois Traction System, a railroad in central and southern Illinois, United States