The African Security Sector Network (ASSN) is a pan-African network of experts and organisations working in the area of Security Sector Reform (SSR). Founded in 2003, the network is headquartered in Accra, Ghana, with regional hubs in Juba, Nairobi and Johannesburg, and a smaller office attached to the African Union in Addis Ababa.

The ASSN exists to facilitate progress towards the achievement of effective and democratically governed security sectors across Africa. It pursues this mission by working to strengthen the capacities of African governments, national security institutions, parliaments, intergovernmental organisations and civil society groups to undertake and own SSR programmes.  The organisation also strives to expand the concept of African SSR through sustained research, publication and training.