Chittagonian is an Indo-Aryan language spoken in the Chittagong Division in Bangladesh. It is often erroneously considered to be a nonstandard dialect of Bengali, although the two are not mutually intelligible. It is estimated that Chittagonian has 13–16 million speakers, principally in Bangladesh.
ClassificationChittagonian is a member of the Bengali-Assamese sub-branch of the Eastern group of Indo-Aryan languages, a branch of the wider Indo-European language family. Its sister languages include Sylheti, Rohingya, Chakma, Assamese, and Bengali. It is derived through an Eastern Middle Indo-Aryan from Old Indo-Aryan, and ultimately from Proto-Indo-European.Historically Arabic script was used for writing system. The Bengali script is the most common script used nowadays.