Sayyid Abdullah Khalil (1892-1970) was a Sudanese military officer and political leader and the second prime minister of the Republic of the Sudan.

Abdullah Khalil was born into a Mahdist farming family in the western Sudan. He was educated in the military school in Khartoum and subsequently served as an engineer in the Egyptian army and after 1925 in the Sudan Defense Force. During his military career he served in the Dardanelles campaign during World War I and against the Italians in Ethiopia in World War II. He retired in 1944 with the rank of brigadier general.

Khalil first became involved in politics in the early 1920s, when he was an active member of the Sudanese Union, a group of young, educated Sudanese who sought closer ties between Egypt and the Sudan. His political activities on behalf of Egypt ended in 1924, when the Egyptian government failed to support a pro-Egyptian...