The Green Line or 1949 Armistice border is the demarcation line set out in the 1949 Armistice Agreements between the armies of Israel and those of its neighbors after the 1948 Arab–Israeli War. It served as the de facto borders of the State of Israel from 1949 until the Six-Day War in 1967, and continues to represent Israel’s internationally recognized borders with the two Palestinian territories: the West Bank and the Gaza Strip.

The 1949 Armistice Agreements were signed between Israel and Egypt, Lebanon, Jordan, and Syria. They formally ended the hostilities of the 1948 Arab–Israeli War and also demarcated the Green Line, which separated Arab-controlled territory from Israel until the latter's victory in the 1967 Arab–Israeli War.