Abdullah I bin Al-Hussein (Arabic: عبد الله الأول بن الحسين, Abd Allāh Al-Awal ibn Al-Husayn, 2 February 1882 – 20 July 1951) was the ruler of Jordan and Transjordan, from 1921 until his assassination in 1951. He was Jordan's first King.
During World War I, he played a key role in secret negotiations with the United Kingdom. This led to the Great Arab Revolt against Ottoman rule that was led by his father Sharif Hussein. Abdullah led guerrilla raids on Ottoman garrisons.
Abdullah was shot and killed in Jerusalem by a Palestinian activist on 20 July 1951, aged 69.