Hindutva: Who is a Hindu? is a 1923 ideological pamphlet by Vinayak Damodar Savarkar. The text is the origin of the term Hindutva (a Sanskrit -tvā absolutive, meaning "Hinduness", "quality of being a Hindu"). It is one of the foundational texts of contemporary Hindu nationalism. Savarkar wrote the pamphlet while imprisoned in Ratnagiri jail. It was smuggled out of the prison and was published by Savarkar's supporters under his alias "Mahratta."