structural:expansion, structural:reformatting
Origin of modern nomenclature

The Uighurs are the people whom old Russian travelers called " Sart " (a name they used for sedentary, Turkish-speaking Central Asians in general), while Western travelers called them Turki, in recognition of their language. The Chinese used to call them "Ch'an-t'ou" ('Turbaned Heads') but this term has been dropped, being considered derogatory, and the Chinese, using their own pronunciation, now called them Weiwuerh. As a matter of fact there was for centuries no 'national' name for them; people identified themselves with the oasis they came from, such as Kashgar or Turfan.

The term "Uyghur" was not used to refer to a specific existing ethnicity in the 19th century: it referred to an 'ancient people'. A late-19th-century encyclopedia entitled The Cyclopædia of India and of Eastern and Southern Asia said "the Uigur are the most ancient of Turkish tribes and formerly inhabited a part of Chinese Tartary (Xinjiang), now occupied by a mixed population of Turk, Mongol and Kalmuck ". Before 1921/1934, Western writers called the Turkic-speaking Muslims of the oases "Turki" and the Turkic Muslims who had migrated from the Tarim Basin to Ili, Ürümqi and Dzungaria in the northern portion of Xinjiang during the Qing dynasty were known as " Taranchi ", meaning "farmer". The Russians and other foreigners referred to them as "Sart", "Turk" or "Turki". In the early 20th century they identified themselves by different names to different peoples and in response to different inquiries: they called themselves Sarts in front of Kazakhs and Kyrgyz while they called themselves "Chantou" if asked about their identity after first identifying as a Muslim. The term "Chantou" (纏頭; Chántóu, meaning "Turban Head") was used to refer to the Turkic Muslims of Altishahr (now Southern Xinjiang), including by Hui (Tungan) people. These groups of peoples often identify themselves by their originating oasis instead of an ethnicity; for example those from Kashgar may refer to themselves as Kashgarliq or Kashgari, while those from Hotan identity themselves as "Hotani". Other Central Asians once called all the inhabitants of Xinjiang's Southern oases Kashgari, a term still used in some regions of Pakistan. The Turkic people also used "Musulman", which means "Muslim", to describe themselves.

Rian Thum explored the concepts of identity among the ancestors of the modern Uyghurs in Altishahr (the native Uyghur name for Eastern Turkestan or Southern Xinjiang) before the adoption of the name "Uyghur" in the 1930s, referring to them by the name "Altishahri" in his article Modular History: Identity Maintenance before Uyghur Nationalism. Thum indicated that Altishahri Turkis did have a sense that they were a distinctive group separate from the Turkic Andijanis to their west, the nomadic Turkic Kirghiz, the nomadic Mongol Qalmaq and the Han Chinese Khitay before they became known as Uyghurs. There was no single name used for their identity; various native names Altishahris used for identify were Altishahrlik (Altishahr person), yerlik (local), Turki and Musulmān (Muslim); the term Musulmān in this situation did not signify religious connotations, because the Altishahris exclude other Muslim peoples like the Kirghiz while identifying themselves as Musulmān. Dr. Laura J Newby says the sedentary Altishahri Turkic people considered themselves separate from other Turkic Muslims since at least the 19th century.

The name "Uyghur" reappeared after the Soviet Union took the 9th-century ethnonym from the Uyghur Khaganate, then reapplied it to all non-nomadic Turkic Muslims of Xinjiang. It followed western European orientalists like Julius Klaproth in the 19th century who revived the name and spread the use of the term to local Turkic intellectuals and a 19th-century proposal from Russian historians that modern-day Uyghurs were descended from the Kingdom of Qocho and Kara-Khanid Khanate formed after the dissolution of the Uyghur Khaganate. Historians generally agree that the adoption of the term "Uyghur" is based on a decision from a 1921 conference in Tashkent, attended by Turkic Muslims from the Tarim Basin (Xinjiang). There, "Uyghur" was chosen by them as the name of their ethnicity, although they themselves note that they were not to be confused with the Uyghur Empire of medieval history. According to Linda Benson, the Soviets and their client Sheng Shicai intended to foster a Uyghur nationality to divide the Muslim population of Xinjiang, whereas the various Turkic Muslim peoples preferred to identify themselves as "Turki", "East Turkestani" or "Muslim".

On the other hand, the ruling regime of China at that time, the Kuomintang, grouped all Muslims, including the Turkic-speaking people of Xinjiang, into the " Hui nationality ". The Qing dynasty and the Kuomintang generally referred to the sedentary oasis-dwelling Turkic Muslims of Xinjiang as "turban-headed Hui" to differentiate them from other predominantly Muslim ethnicities in China. In the 1930s, foreigners travelers in Xinjiang such as George W. Hunter, Peter Fleming, Ella Maillart and Sven Hedin, referred to the Turkic Muslims of the region as "Turki" in their books. Use of the term Uyghur was unknown in Xinjiang until 1934. The area governor, Sheng Shicai, came to power, adopting the Soviet ethnographic classification instead of the Kuomintang's and became the first to promulgate the official use of the term "Uyghur" to describe the Turkic Muslims of Xinjiang. "Uyghur" replaced "rag-head".

Sheng Shicai's introduction of the "Uighur" name for the Turkic people of Xinjiang was criticized and rejected by Turki intellectuals such as Pan-Turkist Jadids and East Turkestan independence activists Muhammad Amin Bughra (Mehmet Emin) and Masud Sabri. They demanded the names "Türk" or "Türki" be used instead as the ethnonyms for their people. Masud Sabri viewed the Hui people as Muslim Han Chinese and separate from his people, while Bughrain criticized Sheng for his designation of Turkic Muslims into different ethnicities which could sow disunion among Turkic Muslims. After the Communist victory, the Chinese Communist Party under Chairman Mao Zedong continued the Soviet classification, using the term "Uyghur" to describe the modern ethnicity.

In current usage, Uyghur refers to settled Turkic-speaking urban dwellers and farmers of the Tarim Basin and Ili who follow traditional Central Asian sedentary practices, as distinguished from nomadic Turkic populations in Central Asia. However, Chinese government agents designate as "Uyghur" certain peoples with significantly divergent histories and ancestries from the main group. These include the Lopliks of Ruoqiang County and the Dolan people, thought to be closer to the Oirat Mongols and the Kyrgyz. The use of the term Uyghur led to anachronisms when describing the history of the people. In one of his books, the term Uyghur was deliberately not used by James Millward.

Another ethnicity, the Western Yugur of Gansu, identify themselves as the "Yellow Uyghur" (Sarïq Uyghur). Some scholars say the Yugurs' culture, language and religion are closer to the original culture of the original Uyghur Karakorum state than is the culture of the modern Uyghur people of Xinjiang. Linguist and ethnographer S. Robert Ramsey argues for inclusion of both the Eastern and Western Yugur and the Salar as sub-groups of the Uyghur based on similar historical roots for the Yugur and on perceived linguistic similarities for the Salar.

" Turkistani " is used as an alternate ethnonym by some Uyghurs. For example, the Uyghur diaspora in Arabia, adopted the identity " Turkistani ". Some Uyghurs in Saudi Arabia adopted the Arabic nisba of their home city, such as " Al- Kashgari " from Kashgar. Saudi-born Uyghur Hamza Kashgari 's family originated from Kashgar.