Ministry of Internal Affairs of Belarus (Belarusian: Міністэрства ўнутраных спраў Рэспублікі Беларусь), abbreviated as MVD in the Russian language and МUS in the Belarusian language, is a body of the Belarusian Government that is charged with the internal affairs of Belarus. Day to day law enforcement is carried out by the Militsiya. The Ministry is also tasked with providing security to state buildings and officials. Organizations such as the Presidential Guard are under the control of the Ministry. The clearing of landmines is among the tasks of the ministry.

The MVD/MUS has previously operated under the following names:

NKVD of the Belarusian SSR (1933–1946)

Ministry of Security of the Belarusian SSR (1946–1962)

Ministry of Internal Affairs of the Belarusian SSR (1962–1991)

Ministry of Internal Affairs of the Republic of Belarus (1991–present)