Nayantara was born in Bengaluru, Karnataka, India, to Malayali Syrian Christian parents Kurian Kodiyattu and Omana Kurian who hail from Tiruvalla, Kerala.
Her brother, Leno, who is nine years elder to her, lives in Dubai.
As her father was an Indian Air Force official, she studied in various parts of India, mainly in North India.
She did her schooling in Jamnagar, Gujarat and Delhi. InTiruvalla,
she studied at Balikamadom Girls Higher Secondary School and then attended Marthoma College for her bachelor's degree in English Literature.