Chettiar or Chetti is a title used by various mercantile, agricultural and land owning castes in South India, especially in the states of Tamil Nadu and Kerala.
The Nattukottai Chettiar (also known as Nattukottai Nagarathar) are elite bankers. The Nattukottai Nagarathars (also known as Nattukottai Chettiar) is a community under Chettiar caste in Shaivism that originated in Kaveripoompattinam under the Chola kingdom of India. They are a prominent mercantile (Vaishya) caste in Tamil Nadu, South India. They are a community with very rich cultural heritage, known for their philanthropy; building temples and schools, and maintaining them throughout India and Asia.[1]