Raj Shrikant Thackeray (born Swaraj Shrikant Thackeray; 14 June 1968) is an Indian politician and chairperson of the Maharashtra Navnirman Sena (MNS), the far-right Marathi ethnocentric regional political party. He is the nephew of Bal Thackeray; and a cousin of Shiv Sena chief and the 19th Chief Minister of Maharashtra Uddhav Thackeray.
Raj Thackeray's given name is a hypocorism of Swaraj. His parents were Shrikant Thackeray (younger brother of Bal Thackeray) and Kunda Thackeray (younger sister of Bal Thackeray's wife Meena Thackeray). As a child he learnt tabla, guitar and violin. Thackeray is a graduate of Mumbai's Sir J.J. Institute of Applied Art Upon graduation he joined Marmik, the weekly magazine of Bal Thackeray, as a cartoonist.
Raj Thackeray resigned from his uncle's party in January 2006 and announced his intention to start a new political party. On 9 March 2006 in Mumbai, Thackeray founded "Maharashtra Navnirman Sena" party. At the time of the party's foundation, Thackeray stated that he does not want to have hostilities with his uncle who "was, is and always will be(his) mentor".