Ati

As a word, Ati may refer to:

• Ati people, a Negrito ethnic group in the Philippines
  • Ati-Atihan Festival, an annual celebration held in the Philippines
• Ati, a queen of the fabled Land of Punt in Africa
• Ati, Chad, a town in Chad
• Ati, Iran, a village in Khuzestan Province, Iran
• Maha Ati, one of the nine subdivisions of Buddhist Tantra in the Nyingma school

ATI

ATI may refer to:

Electronics and information technology

• ATI Technologies, a former Canadian semiconductor company manufacturing GPUs and chipsets
• Acronis True Image, cloning and backup software
• Allied Telesis, a telecommunications company, formerly Allied Telesyn

Transportation

• Aero Trasporti Italiani, a defunct Italian airline (ICAO designator)
• Air Transport International, a charter cargo airline
• Artigas Airport, IATA designation

Academic institutions

• Auckland Technical Institute, now the Auckland University of Technology, Auckland, New Zealand
• Ohio State University Agricultural Technical Institute, known as Ohio State ATI
• An associate of the Tax Institute of Australia

Other

• Above threshold ionization, a photoelectrochemical process ionizing an atom by an excessive number of photons
• Allegheny Technologies Incorporated, a specialty metals company headquartered in Pittsburgh, Pennsylvania, USA
• Access to Insight, a Theravada Buddhist website
• Associated Television International, a production and distribution company
• Astatine monoiodide, a radioactive molecule