The relation between Libya and Sub Sahara Africa has been complex during Muammar Gaddafi‘s era and culminate in 2011. On February 2011, civilians began to have a demonstration demanding an end to the leader of Libya at that time, Muammar Gaddafi in his 41 years term of government, wherein that demonstration a lot of victims became a target of mass atrocities of government armed forces. The intervention of African Union toward Libya crisis 2011 will be the main discussion in this thesis. Violence by the Libyan government got the attention from international communities. International and regional organization have a responsibility to protect people in Libya from violence through political, economic, and military matters, including African Union as the regional organizations. In 2011, African Union was legally mandated for an intervention in Libya crisis, to protect people from war crimes, genocide, and crime against humanity. This thesis has the aim to describe and analyze the African Union Response to Libya Crisis in 2011. Moreover, the method of data collection in this thesis will use qualitative data and relied on what African Union did in form of missions, and the African Union‘s action toward Libya crisis 2011, looking for the solution of African Union in form of peacekeeping mission toward Libya crisis and concludes by providing the suggestion and recommendation for African Union in strengthening their peace and security mission for the future African crisis, in the case of Libyan in 2011.