Kayalpatnam (also known as Kayalpattinam or Kayalpattanam) is a municipality in the Thoothukudi district in the Indian state of Tamil Nadu.

Arab traders from Egypt and Yemen landed at the port of Korkai (present-day Kayalpatnam).

Ibn Battuta, the Muslim Moroccan explorer has mentioned about Kayalpattinam (as called as Fatan) in his travel node The Rihla (lit.

Noted photographer Benoy Behl has made a film on the Islamic architecture of India, and visited a Kayalpatnam mosque.

[3] According to 2011 census, Kayalpattinam had a population of 40,588 with a sex-ratio of 1,082 females for every 1,000 males, much above the national average of 929.