Dimitar Nikolov Asenov (Bulgarian: ??????? ??????? ?????? [di'mit?r ni'k?lof ?'s?nof]; 10 May 1840 – 10 August 1868), better known as Hadzhi Dimitar (????? ??????? ['had??i di'mit?r]), was one of the most prominent Bulgarian voivode and revolutionaries working for the Liberation of Bulgaria from Ottoman rule.