The Palestinian territories are the two regions of the former British Mandate for Palestine that have been occupied by Israel since the Six-Day War of 1967, namely the West Bank and the Gaza Strip. The International Court of Justice (ICJ) has referred to the West Bank, including East Jerusalem, as "the Occupied Palestinian Territory", and this term was used as the legal definition by the ICJ in its advisory opinion of July 2004. The term occupied Palestinian territory was used by the United Nations and other international organizations between October 1999 and December 2012 to refer to areas controlled by the Palestinian National Authority, but from 2012, when Palestine was admitted as one of its non-member observer states, the United Nations started using exclusively the name State of Palestine. The European Union (EU) also uses the term "occupied Palestinian territory". The government of Israel and its supporters use the label "disputed territories" instead.

Israel has occupied the Palestinian territories and the Golan Heights since the Six-Day War of 1967. It previously occupied the Sinai Peninsula and southern Lebanon as well. Prior to Israel's victory in the Six-Day War, occupation of the Palestinian territories was split between Egypt and Jordan, with the former having occupied the Gaza Strip and the latter having annexed the West Bank; the Sinai Peninsula and the Golan Heights were under the sovereignty of Egypt and Syria, respectively. The first conjoined usage of the terms "occupied" and "territories" with regard to Israel was in United Nations Security Council Resolution 242, which was drafted in the aftermath of the Six-Day War and called for: "the establishment of a just and lasting peace in the Middle East" to be achieved by "the application of both the following principles: ... Withdrawal of Israeli armed forces from territories occupied in the recent conflict ... Termination of all claims or states of belligerency and respect for and acknowledgment of the sovereignty, territorial integrity and political independence of every State in the area and their right to live in peace within secure and recognized boundaries free from threats or acts of force."