Mru, also known as Mrung (Murung), is a Sino-Tibetan language of Bangladesh and Myanmar. It is spoken by a community of Mrus (Mros) inhabiting the Chittagong Hill Tracts of Bangladesh with a population of 22,000 according to the 1991 census, and in Rakhine State, Myanmar. The Mrus are the second-largest tribal group in Bandarban District of the Chittagong Hill Tracts. A small group of Mros also live in Rangamati Hill District.

Mru forms the Mruic language branch with Hkongso and Anu, which are spoken in Paletwa Township, Chin State, Myanmar. The position of Mruic with Sino-Tibetan is unclear.

The Mros live in forest areas of Lama Upazila, Ruma Upazila, Alikadam Upazila, and Thanchi Upazila near Chimbuk Mountain of Bandarban District, Bangladesh (Rashel 2009). In Myanmar, they also live in Buthidaung Township and Ponnagyun Township in Sittwe District (Akiab), Rakhine State.

Ethnologue (22nd edition) lists 3 main dialects as Anok, Dowpreng (Dopreng), and Sungma (Tshungma), as well as the 2 minor dialects of Domrong and Rumma.

There are five Mru dialects according to Ebersole (1996).

There are five major Mro clans (Rashel 2009).

Rashel (2009) also lists another classification scheme which lists ten Mro clans.

Unlike the Kuki-Chin languages, Mru has SVO (subject-verb-object) word order (Ebersole 1996).