The Alawis, Alawites (Arabic: Alawyah), or pejoratively Nusayris (Arabic: Nuayryah) are an ethnoreligious group that lives primarily in Levant and follows Alawism, a sect of Islam that originated from Shia Islam. The Alawites revere Ali (Ali ibn Abi Talib), considered the first Imam of the Twelver school. The group is believed to have been founded by Ibn Nusayr during the 9th century. Ibn Nusayr was a disciple of the tenth Twelver Imam, Ali al-Hadi and of the eleventh Twelver Imam, Hasan al-Askari. For this reason, Alawites are also called Nusayris. Another name, Ansari, is believed to be a mistransliteration of "Nusayri". The word Nusayri has been used as a slur against Alawites because of the word's similarity to the word Nasrani, meaning Christian in Arabic. Nusayri is now being used as a meaning of Little Christian to insult the community. Therefore, Alawites never identify as Nusayri.

According to Mehrdad Izady, surveys suggest Alawites represent 17.2 percent of the Syrian population, an increase from 11.8 percent in 2010, and are a significant minority in the Hatay Province of Turkey and northern Lebanon. There is also a population living in the village of Ghajar in the Golan Heights. Alawites form the dominant religious group on the Syrian coast and towns near the coast, which are also inhabited by Sunnis, Christians, and Ismailis. They are often confused with the Alevis, a distinct religious sect in Turkey.Alawites identify as a separate ethnoreligious group. The Quran is only one of their holy books and texts, and their interpretation thereof has very little in common with the Shia Muslim interpretation but is in accordance with the early Batiniyya and other ghulat sects. Alawite theology and rituals break from mainstream Shia Islam in several important ways. For one, the Alawites drink wine as Ali's transubstantiated essence in their rituals; while other Muslims abstain from alcohol, Alawites are encouraged to drink socially in moderation. Finally, some of them believe in reincarnation, but it is not essential in their doctrine.Alawites have historically kept their beliefs secret from outsiders and non-initiated Alawites, so rumours about them have arisen. Arabic accounts of their beliefs tend to be partisan (either positively or negatively). However, since the early 2000s, Western scholarship on the Alawite religion has made significant advances. At the core of Alawite belief is a divine triad, comprising three aspects of the one God. These aspects, or emanations, appear cyclically in human form throughout history.

The establishment of the French Mandate of Syria marked a turning point in Alawi history. It gave the French the power to recruit Syrian civilians into their armed forces for an indefinite period and created exclusive areas for minorities, including the Alawite State. The Alawite State was later dismantled, but the Alawites continued to be a significant part of the Syrian Armed Forces. Since Hafez al-Assad took power through the 1970 Corrective Movement, the government has been dominated by a political elite led by the Alawite al-Assad family. During the Islamist uprising in Syria in the 1970s and 1980s, the establishment came under pressure. Even greater pressure has resulted from the Syrian Civil War.

The Aqrab massacre is a contested event which occurred on 10/11 December 2012, during the Syrian civil war, in the Alawite section of the mixed town of Aqrab, Hama Governorate, Syria. The Syrian Observatory for Human Rights claimed that 125 people were killed or wounded in those events, while other activists claimed that as many as 300 people were killed. Activists said that they could confirm the deaths of 10 people.