Dhayanidhi Azhagiri is an Indian Tamil cinema producer and distributor. He is the owner of the Cloud Nine Movies banner. His grandfather was M. Karunanidhi, the former Chief Minister of Tamil Nadu. His father is M. K. Alagiri, the former Minister of Chemicals and Fertilizers.

Muthuvel Karunanidhi Alagiri, commonly known as M. K. Alagiri, is an Indian politician from Tamil Nadu and was a Union Cabinet Minister of Chemicals and Fertilizers from 28 May 2009 to 20 March 2013. He is the second son of the former Chief Minister of Tamil Nadu, M. Karunanidhi and his second wife Dayalu Ammal and the head of South Zone of Dravida Munnetra Kazagham.