Fatah, formally the Palestinian National Liberation Movement, is a Palestinian nationalist and social democratic political party. It is the largest faction of the confederated multi-party Palestine Liberation Organization (PLO) and the second-largest party in the Palestinian Legislative Council (PLC). Mahmoud Abbas, the President of the Palestinian Authority, is the chairman of Fatah.

Palestinian nationalism is the national movement of the Palestinian people that espouses self-determination and sovereignty over the region of Palestine. Originally formed in the early 20th century in opposition to Zionism, Palestinian nationalism later internationalized and attached itself to other ideologies; it has thus rejected the occupation of the Palestinian territories by the government of Israel since the 1967 Six-Day War. Palestinian nationalists often draw upon broader political traditions in their ideology, such as Arab socialism and ethnic nationalism in the context of Muslim religious nationalism. Related beliefs have shaped the government of Palestine and continue to do so.