Dattatray Balwant Parasnis (Devanagari: दत्तात्रय बळवंत पारसनीस; 1870–1926) was a historian from Maharashtra, India, who lived during the British Raj days.
He authored many books about Indian history. Together with Charles Augustus Kincaid, he coauthored in three volumes "History of the Maratha People".
The British government in India had conferred on him the title Rao Bahadur in honor of his scholarship.