The Ministry of Interior (MoI; Arabic: وزارة الداخلية) is one of the governmental bodies of Saudi Arabia responsible for national security, naturalization, immigration, and customs in Saudi Arabia.

It was founded in 1926 by King Abdulaziz, but the organization was reformed in 1951 when the combined ministerial body covering financial and interior affairs were separated.

[4] The Ministry of Interior was created in 1926 by King Abdulaziz as a solution to end political unrest, tribal conflicts, and statelessness caused by the absence of a powerful central government.

The goal of the organization is to serve the citizens and residents of Saudi Arabia, achieving security, stability, and tranquility.

The minister of interior has several objectives and the ministry's mission is summarized as follows: The history and formation of the MOI and its various sectors passed through phases of administrative development and organization.