Marko Došen (July 7, 1859 – September 7, 1944) was a Croatian politician.
Born in Mušaluk near Gospić, Došen finished elementary school in Lika and one grade of gymnasium in Bjelovar. He entered into trade, but in 1890 moved to Russia where he opened a bookstore in Saint Petersburg. Together with a Russian historian he published the book Hrvati i njihova borba s Austrijom (Croats and their battle with Austria). He returned to Gospić in 1893 and the following year started his weekly Hrvat which he edited for ten years. He was a member of Starčević's Party of Rights in the Croatian Parliament from 1913 to 1918.
After 1918 he was a member of the Croatian Republican Peasant Party (HRSS). He was elected into the national assembly of the Kingdom of Serbs, Croats and Slovenes in 1920, 1923 and 1925. After the Pašić - Radić agreement in 1925 he ended his association with Radić's HRSS.
After King Alexander declared a royal dictatorship on January 6, 1929, Došen became a member of the Ustaša - Croatian revolutionary organization. He was one of the organizers of the Velebit Uprising in 1932.
After the proclamation of the Independent State of Croatia he returned to the country. In 1942 he became the president of the Croatian Parliament. Although the Parliament only met a few times within the first year, he retained his position as its president until his death in Zagreb in 1944.