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.
Anok: largest and central
Tshungma: in the north
Domrong: in the lowlands north of the Matamuri
Dopreng: in far south and into Arakan
Rumma: in far south and into Arakan
There are five Mru dialects according to Ebersole (1996).
Anawk
Süngma
Dopreng
Tamsa
Rengmitsa
There are five major Mro clans (Rashel 2009).
Dengua
Premsang
Kongloi
Maizer
Ganaroo Gnar
Rashel (2009) also lists another classification scheme which lists ten Mro clans.
The Mru script is an indigenous, messianic script: In the 1980s Menlay Murang (also known as Manley Mro) created the religion of Khrama (or Crama) and with it a new script for the Mru language.[5][6]
The script is written from left to right and has its own set of digits. It does not use tone marks.
The Mru language is written in both the Latin and Mru scripts.
^Hammarström, Harald; Forkel, Robert; Haspelmath, Martin, eds. (2017). "Mruic". Glottolog 3.0. Jena, Germany: Max Planck Institute for the Science of Human History.
^Williams, Nicholas J. (2008). Directionals in Mru. Dartmouth College.
^Namkung, Ju (1996). Mru. Phonological Inventories of Tibeto-Burman Languages. (STEDT Monograph Series, 3.): Berkeley: Center for Southeast Asia Studies. p. 268.{{cite book}}: CS1 maint: location (link)