Nayak is a title used by various castes and ethnic groups across India. Alternative spellings and variations include Nayaka, Nayakar, Nayagar, Nayakkar, Naik, Naiker, Naicker, Naickan, Naiken, Nayakkan, Nayan, Nayar, Nayanar, Nair, Naidu, Nayudu and Naidoo'.