Tregami (Trigami), or Katar Gambiri, is a language spoken in the villages of Gambir, Kaṭâr, and Devoz in the Tregâm Valley off the lower Pech River^[2] in the Watapur District of Kunar Province in Afghanistan. The area is in the Hindu Kush along the border with Pakistan. Tregami belongs to the Nuristani group of the Indo-Iranian language family. It is spoken by approximately 3,500 people (2011). Most individuals speak Pashto in addition to Tregami.^[1]

Tregami is a close relative of Waigali, spoken in Ghaziabad District to the east, with which it has a lexical similarity of 75% to 80%.^[1] Although Tregami villages are close in proximity, there is a slight difference between the dialects of Katar and Gambir.^[3] The language has been influenced by the neighboring Indo-Aryan languages^[which?] and by the Nuristani Kata-vari dialect.^[4]