The insurgency in Cabo Delgado is an ongoing Islamist insurgency in Cabo Delgado Province, Mozambique, mainly fought between militant Islamists and jihadists attempting to establish an Islamic state in the region, and Mozambican security forces. Civilians have been the main targets of terrorist attacks by Islamist militants. The main insurgent faction is Ansar al-Sunna, a native extremist faction with tenuous international connections. From mid-2018, the Islamic State's Central Africa Province has allegedly become active in northern Mozambique as well, and claimed its first attack against Mozambican security forces in June 2019. In addition, bandits have exploited the rebellion to carry out raids. As of 2020, the insurgency intensified, as in the first half of 2020 there were nearly as many attacks carried out as in the whole of 2019.
Ansar al-Sunna (English: "Supporters of the Tradition") is similar to the name of an Iraqi Sunni insurgent group that fought against U.S. troops between 2003 and 2007. They are known locally as al-Shabaab but they are not formally related to the better known Somali al-Shabaab. Some of the militants are known to speak Portuguese, the official language of Mozambique, however others speak Kimwane, the local language, and Swahili, the lingua franca language spoken north of that area in the Great Lakes region. Reports also state that members are allegedly mostly Mozambicans from Mocimboa da Praia, Palma, and Macomia districts, but also include foreign nationals from Tanzania and Somalia.