|Hindi (Central Zone)|
The Hindi languages, also known as the Madhya languages and the Central Zone of the Indo-Aryan languages, is a dialect continuum of the Hindi zone spoken across northern India that descend from the Madhya prakrits, and includes the official languages of India and Pakistan, Hindi and Urdu. The coherence of this group depends on the classification being used; here we will consider only Eastern and Western Hindi.
If there can be considered a consensus within the dialectology of Hindi proper, it is that it can be split into two sets of dialects: Western and Eastern Hindi. Western Hindi evolved from the Apabhramsa form of Shauraseni Prakrit, Eastern Hindi from Ardhamagadhi.
- Western Hindi
- Braj (Braj Bhasha, Brajbhakha), spoken in western Uttar Pradesh and adjacent districts of Rajasthan and Haryana
- Haryanvi (Bangaru), spoken in the states of Haryana and Delhi.
- Bundeli (Bundelkhandi), spoken in west-central Madhya Pradesh.
- Kannauji, spoken in west-central Uttar Pradesh.
- Khari boli, the standard dialect, generally identified with the grammatical core of Kauravi (vernacular Hindustani), but displaying features of other dialects and adjacent languages, as well as non-Indo-Aryan languages such as Persian. It forms the basis of the Hindustani language, with its standard registers of Urdu and Modern Standard Hindi.
- Eastern Hindi
To Western Hindi Ethnologue 16 adds Sansi, Chamari, Bhaya (= Malvi?), Gowli (= Gowlan?), and Ghera (a Pakistani enclave of an unidentified Indian language). Sansi is particularly close to Hindustani, but it's not clear the others are actually Central Zone.
Use in culturally non-Hindi regions in the subcontinent 
- Urdu is the official language of Pakistan. Although only the native language of 7% of the population, it is nearly universal as a second language.
- Bambaiya Hindi, the dialect of the city of Bombay (Mumbai); it is based on Hindustani but heavily influenced by Marathi and Gujarati. Technically it is a pidgin, i.e., neither is it a mother language of any people nor is it used in formal settings by the educated and upper social strata. However, it is often used in the movies of Hindi cinema (Bollywood) because Mumbai is the base of the Bollywood film industry.
- Dakhni (also called Hyderabadi Urdu), a dialect of Urdu spoken in the present areas of the erstwhile Hyderabad State.
- Bangalori Urdu, a dialect of Urdu native to Bangalore, Karnataka and a few surrounding districts.
Note: There is a slight difference between Urdu spoken in Hyderabad city (and a few surrounding districts) and the Urdu spoken in the other regions of the erstwhile Hyderabad State.
- Kolkata Hindi, a Khariboli-based pidgin spoken in the city of Calcutta (Kolkata), Shillong, etc., heavily influenced by Bhojpuri and Bengali.
- Andaman Creole Hindi is a trade language of the Andaman Islands.
- (Shapiro 2003, p. 251)
- (Shapiro 2003, p. 277)
- Grierson G.A. Western Hindi. In Linguistic Survey of India.
- (Shapiro 2003, pp. 251–252)