Tamil-language surnames

thumb|Chettiars in traditional dress, 1920s

The Tamil and Malayali name Ramachandran may refer to: A. Ramachandran (1935–2024), an Indian painter A. Ramachandran (politician) the incumbent mayor of Salem, Tamil Nadu C. R. Ramachandran, an Indian politician G. Ramachandran (1904–1995), an Indian social reformer and politician Gopalasamudram Narayana Iyer Ramachandran (1922–2001), an Indian biophysicist known for creating the Ramachandran plot K. V. Ramachandran (1898–1956), an Indian music and art critic M. Ramachandran, an Indian politician M. D. R. Ramachandran (1934–2024), an Indian politician M. G. Ramachandran, also known a

Iyers () (also spelt as Ayyar, Aiyar, Ayer, or Aiyer) are an ethnoreligious community of Tamil Brahmins. Most Iyers are followers of the Advaita philosophy propounded by Adi Shankara and adhere to the Smarta tradition. This is in contrast to the Iyengar community, who are adherents of Sri Vaishnavism. The Iyers and the Iyengars are together referred to as Tamil Brahmins. The majority of Iyers reside in Tamil Nadu, India.

Iyengars (also spelt Ayyangar, Aiyengar, or Aiyangar, pronounced ) are an ethnoreligious community of Tamil-speaking Hindu Brahmins, whose members follow Sri Vaishnavism and the Visishtadvaita philosophy propounded by Ramanuja. Iyengars are divided into two denominations, the Vadakalai and the Tenkalai and live mostly in the Southern Indian states of Tamil Nadu, Karnataka, and Andhra Pradesh. The community belongs to the Pancha Dravida Brahmana classification of Brahmins in India.

Ramasamy () is a Tamil male given name. Due to the Tamil tradition of using patronymic surnames, it may also be a surname for males and females.

Reddiar (also spelt as Reddiyar) is an ethnic-Telugu Warrior,landowning, merchantile, agricultural social group in Tamil Nadu and Pondicherry in India.