Hemalatha Nagarajan is Senior Professor in the Department of Linguistics and Contemporary English at the English and Foreign Languages University (formerly known as the Central Institute of English and Foreign Languages), Hyderabad, India. She obtained an MA in English from Madras University and an MLitt and PhD from CIEFL, Hyderabad, India. She was awarded the British Chevening scholarship for a post-doctoral research programme at University College, London, in 1994. Her PhD work was published as a book titled A Theory of Post-Syntactic Phonology. Her areas of interest in linguistics are phonology, syntax, neurolinguistics, and language acquisition. Apart from research articles in her area of interest, namely linguistics, she has published books on grammar and general textbooks. She has worked as a resource person in several workshops and teacher training programmes in India and Sri Lanka and presented papers at various conferences at the national and international levels. She has guided 14 doctoral students and 13 students of MPhil.

Areas of interest in linguistics are phonology, syntax, neurolinguistics, and language acquisition. Apart from research articles in her area of interest, namely linguistics, she has published books on grammar and general textbooks.