Uyghur is a Turkic language spoken in the Xinjiang Uyghur Autonomous Region, administered by China, by the Uyghur people. It is a language with two standard languages and several dialects. However, these are all mutual intelligible at large, in spite of the various differences.
Various classifications of the dialects of Uyghur have been proposed through time. Today, however, it is widely accepted that there are three major dialect groups. This was originally introduced by E. R. Tenishev, but has since been modified by other linguists, like M. Osmanov, though the original classification by E. R. Tenishev remains the most widely accepted.
The classification by E. R. Tenishev can be seen below.
R. F. Hahn divides the Central branch further into a Northern and Southern branch, and includes the dialects of Taranchi, Ili and Hami as Northern Central dialects, and the dialects of Tarim, Dolan, Artux and Mughal as Southern Central dialects, also keeping the dialects proposed by E. R. Tenishev. And he also includes the dialects of Qiemo, Charqaliq and perhaps Kelpin in the Southern branch.
The dialects included in the Central branch by R. F. Hahn are also included by M. Osmanov, although he also chooses to go further and divides the Southern branch into three sub-branches: a sub-branch including the dialect of Guma, a sub-branch including the dialects of Elchi and Karakax, and a sub-branch including the dialects of Cheriya, Keriya, Niya and Qiemo.