sv:Marumalarchi Dravida Munnetra Kazhagamமறுமலர்ச்சித் திராவிட முன்னேற்றக் கழகம் (Marumalarchi Dravida Munnetra Kazhagam, abbreviated MDMK), a political party in the Indian state of Tamil Nadu. It is led by Vaiko. The party was a member of the National Democratic Alliance until the winter of 2003. But although the party was participating in the national NDA-government, Vaiko was arrested for 19 months under the Prevention of Terrorism Act.

Since the 2004 Lok Sabha elections the party is a member of the broad Tamil alliance, the Democratic Progessive Alliance, together with Dravida Munnetra Kazhagam, Indian National Congress, Pattali Makkal Katchi, Communist Party of India, Communist Party of India (Marxist) and Indian Union Muslim League.