Syria, officially the Syrian Arab Republic, is a country in West Asia located in the Eastern Mediterranean and the Levant. It borders the Mediterranean Sea to the west, Turkey to the north, Iraq to the east and southeast, Jordan to the south, and Israel and Lebanon to the southwest. It is a republic under a transitional government and comprises 14 governorates. Damascus is the capital and largest city. With a population of 25 million across an area of 185,180 square kilometres (71,500 sq mi), it is the 57th-most populous and 87th-largest country.

The name "Syria" historically referred to a wider region. The modern state encompasses the sites of several ancient kingdoms and empires, including the Eblan civilization. Damascus was the seat of the Umayyad Caliphate and a provincial capital under the Mamluk Sultanate. The modern Syrian state was established in the mid-20th century after centuries of Ottoman rule, as a French Mandate. The state represented the largest Arab state to emerge from the formerly Ottoman-ruled Syrian provinces. It gained de jure independence as a parliamentary republic in 1945 when the First Syrian Republic became a founding member of the United Nations, an act which legally ended the French Mandate. French troops withdrew in April 1946, granting the nation de facto independence. The post-independence period was tumultuous, with multiple coup attempts between 1949 and 1971. In 1958, Syria entered a brief pan-Arab union with Egypt, which was terminated following a 1961 coup d'état. The 1963 coup d'état carried out by the military committee of the Ba'ath Party established a one-party state, which ran Syria under martial law from 1963 to 2011. Internal power-struggles within Ba'athist factions caused further coups in 1966 and 1970, the latter of which saw Hafez al-Assad come to power. Under Assad, Syria became a hereditary dictatorship. Assad died in 2000, and he was succeeded by his son, Bashar.

Since the Arab Spring in 2011, Syria has been embroiled in a multi-sided civil war with the involvement of several countries, leading to a refugee crisis in which more than 6 million refugees were displaced from the country. In response to rapid territorial gains made by the Islamic State during the civil war in 2014 and 2015, several countries intervened on behalf of various factions opposing it, leading to its territorial defeat in 2017 in both central and eastern Syria. Thereafter, three political entities — the Syrian Interim Government, Syrian Salvation Government, and the Democratic Autonomous Administration of North and East Syria — emerged in Syrian territory to challenge Assad's rule. In late 2024, a series of offensives from a coalition of opposition forces led to the capture of Damascus and the fall of Assad's regime. By 2025, the war had left Syria's economy in a poor state, following years of international sanctions that were later eased.

A country of fertile plains, high mountains, and deserts, Syria is home to diverse ethnic and religious groups. Arabs are the largest ethnic group, and Sunni Muslims are the largest religious group.