Musaid bin Abdul Rahman Al Saud (Arabic: مساعد بن عبد الرحمن بن فيصل آل سعود Musāʿid bin ʿAbdur Raḥman Āl Saʿūd; 1922 – 1992) was a Saudi Arabian statesman and official who served as the Saudi Arabian minister of interior in 1960 and as the minister of finance from 1962 to 1975.

Prince Musaid was one of the younger half-brothers of King Abdulaziz and was one of the senior royals who shaped the succession of the rulers during his lifetime.

[15] Prince Musaid was also the chief of Royal Diwan during the reign of King Saud and accompanied him in his state visit to the US in 1957.

[20] Prince Musaid's tenure as minister of finance ended on 14 October 1975[21] when he was dismissed from the office by King Khalid.

[21] There is another report arguing that Prince Musaid requested to be removed from the post citing his health condition.

[26][27] His daughter, Noura bint Musaed, married her cousin, Abdul Rahman bin Abdullah bin Abdul Rahman,[25] who was one of the members of Al Saud Family Council established in June 2000 by Crown Prince Abdullah to discuss private issues.

[5] Following his death his books were donated to the library of Imam Muhammad bin Saud Islamic University in Riyadh.