Dimitar Ivanov Popov (Bulgarian: Димитър Иванов Попов) (October 13, 1894 – October 25, 1975) was a Bulgarian organic chemist and an academician of the Bulgarian Academy of Sciences. Prof. D. Ivanov is known by his father's name Ivanov rather than his family's name Popov. He is the namesake of the Ivanov reaction in chemistry.