The Ministry of National Security (MNS, Azerbaijani: Milli Təhlukəsizlik Nazirliyi) was an intelligence agency within the cabinet of Azerbaijan.

The MNS was a central executive authority that carried out the competencies designated to it by the legislation of the Republic of Azerbaijan in the field of obtaining and analyzing information about foreign affairs, corporations, individuals.

The MNS also carried out intelligence, counter-intelligence, protection of state secrets, revealing, preventing, precluding and detection of crimes.

[1] On 14 December 2015, President Ilham Aliyev signed a decree dissolving the ministry and creating a National Security Service with domestic duties and a foreign intelligence service.

[4] The MNS helped thwart the 2000 assassination attempt on Russian president Vladimir Putin by Iraqi citizen Kenan Ahmed Rustam in Martyrs' Lane.