Ati

Ati or ATI may refer to:

• Ati people, a Negrito ethnic group in the Philippines
  • Ati language (Philippines), the language spoken by this people group
  • Ati-Atihan festival, an annual celebration held in the Philippines
• Ati language (China), an unclassified Loloish language of Huaning County, Yunnan, China
• 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

The acronym ATI may refer to: