Kachin (also called Jingpo, Jinghpaw, Chingpaw, or Singpho) is a Tibeto-Burman language [1] spoken by approximately 900,000 people. The largest concentration of speakers is in Kachin State in northern Myanmar, where the language serves as the primary language of the Kachin people and as a lingua franca among various ethnic communities. Significant populations also speak Kachin in Yunnan Province of China, where the language is known as Jingpo (景颇语), and in Arunachal Pradesh and Assam in northeast India, where it is known as Singpho.
Kachin is a tonal language with two contrastive tones (high and low) plus a distinction in voice quality (modal vs. creaky). These distinctions are phonemic — the same segmental sequence pronounced with different tone or voice quality can mean entirely different things. In the standard orthography, tones are not typically marked, though linguistic analyses of Kachin describe the tonal system in detail.
The Kachin people are a major ethnic group of Myanmar and are composed of several subgroups — Jingpho (the most numerous), Rawang, Lisu, Lachid, Zaiwa, and Langsu — who together form the Kachin ethnic identity. The Jingpho subgroup speaks what is standardly called Kachin or Jingpo, while other Kachin subgroups speak distinct and sometimes unrelated languages.