Assef Shawkat (Arabic: آصف شوكت, romanized: ʾĀṣif Šawkat‎; 15 January 1950 – 18 July 2012) was a Syrian military officer and intelligence chief who was the Deputy Minister of Defense of Syria from September 2011 until his death in July 2012. He was the brother-in-law of former Syrian President Bashar al-Assad, having married his older sister Bushra.

He and three other top Syrian government officials were killed on 18 July 2012 in Damascus during a deadly bomb attack allegedly organized by the Free Syrian Army, a coalition of Syrian opposition rebel groups. Shawkat was a key suspect in a terrorist attack in Beirut that killed Lebanese Prime Minister Rafic Hariri on 14 February 2005. US Department of Treasury had sanctioned Shawkat in 2006 for orchestrating the assassination, describing him as "a key architect" of the Syrian occupation of Lebanon.

Assef Shawkat was born into a Alawite family in the village of Al-Madehleh, a predominantly alawite village, in the Tartus Governorate of Syria on 15 January 1950. He grew up in modest comfort and studied law and history at Damascus University before joining the Syrian Army in the early 1970s. During this time, Shawkat married and had five children.

After joining the army, Shawkat began working his way up through the ranks, and by 1982 he was an officer in the Defense Companies paramilitary force headed by Rifaat al-Assad, the brother of Syrian President Hafez al-Assad. The Defense Companies were responsible for putting down an Islamist uprising in the city of Hama in 1982.

In 1983, after Hafez al-Assad suffered an apparent heart attack, he named governing council of six men he believed were unlikely to seize power to run the country in his absence. Rifaat al-Assad was not among them. Hafez al-Assad's prolonged absence caused supporters of Rifaat al-Assad to rally around him, and in 1984 Rifaat launched a bid to take control of Damascus which nearly escalated into a civil war. The tensions only eased when Hafez al-Assad, still ill, addressed the nation and the attempted coup d'état collapsed. Shawkat remained loyal to Hafez al-Assad throughout this period, and he was rewarded with a promotion to colonel.

In the early 1980s, Shawkat met Bushra al-Assad, who was at that time studying pharmacy at Damascus University. Bushra was the first child and only daughter of Hafez al-Assad, and she had a close relationship with her father. Bushra's father and her younger brother Bassel al-Assad were strongly opposed to Bushra's relationship with Shawkat, who was ten years her senior and a divorced father of five from a modest background. Bassel briefly had Shawkat jailed in 1993 to block their relationship. However, there is another report stating that the reason for his imprisonment was related to his wrongdoing.^{[citation needed]}

However, in January 1994, Bassel died in a car crash, and a year later, in 1995 Shawkat and Bushra al-Assad eloped. Despite failing to obtain her father's blessing prior to the marriage, Hafez al-Assad accepted Shawkat into the family, and Shawkat was soon promoted in rank to Major-General. Assef and Bushra had five children, all named for immediate members of Bushra's family: Bushra, Anisa, Bassel, Naya and Hafez.

After his marriage to Bushra al-Assad, Shawkat built a close relationship with her brother Bashar, who had recently been recalled from London after his brother Bassel's death to be groomed as his father's successor. Bushra reportedly nurtured this relationship. On the other hand, he is said to have had a fractious relationship with Bushra's and Bashar's younger brother Maher al-Assad, who is alleged to have shot him in the stomach in 1999.