Mansour bin Abdulaziz Al Saud (Arabic: منصور بن عبد العزيز آل سعود Manṣūr ibn ‘Abdul‘azīz Āl Su‘ūd; 1921 – 2 May 1951) was a Saudi royal and politician who served as the defense minister of Saudi Arabia between 1943 and 1951.

[6] His mother was an Armenian woman, Shahida (died 1938),[7][8] who was reportedly the favorite wife of King Abdulaziz.

[13] He officially visited Cairo when King Abdulaziz sent him there to support the Indian Muslim officers and men just before the Battle of El Alamein.

[15] Then Prince Mansour was appointed minister of defense and aviation by King Abdulaziz on 10 November 1943 when the office was established which had been titled as the ministry of war since 1940.

[17] In December 1944 Prince Mansour visited Khartoum where Saudi army personnel were trained in driving and maintenance.

[8] His term as defense minister lasted until his death in 1951, and he was replaced by his full brother Prince Mishaal who had been his deputy at the ministry.

[26] Unlike his siblings Prince Mansour was fond of automobiles and machines and spent most of his time in the Royal garage in Riyadh.