Sahibzada Mirza Mu'hammad Jalal ud-Din Mridha Sahib (Urdu: ???? ?????? ???? ??????), better known as Jalaluddin Mirza (1898-1975), was a Bengali Indian aristocrat in the erstwhile British Empire who served as the fifth and last hereditary Zamindar of Natore from the House of Singra and Natore before it was abolished in 1951.