The Military Council for Justice and Democracy (Arabic: المجلس العسكري للعدالة والديمقراطية; French: Le Conseil Militaire pour la Justice et la Démocratie) was the supreme political body of Mauritania. It served as the country's interim government following the coup d'état which ousted the President, Maaouya Ould Sid'Ahmed Taya on 3 August 2005. It was led by the former director of the national police force, Colonel Ely Ould Mohamed Vall. After seizing power it quickly pledged to hold elections within two years, and promised that none of its own members would run. A few days after seizing power, Vall named Sidi Mohamed Ould Boubacar as Prime Minister following the resignation of Taya's last Prime Minister, Sghair Ould M'Bareck.
A presidential election took place in March 2007 and the new President Sidi Mohamed Ould Cheikh Abdallahi was sworn in on April 19, 2007.
Several members of CMJD later became members of the next Mauritanian junta, the High Council of State when it came to power in the 2008 Mauritanian coup under the leadership of Mohamed Ould Abdel Aziz.