Marijan Marković (October 20, 1840 – June 20, 1912) was a Bosnian Croat Franciscan friar of the Franciscan Province of Bosna Srebrena, bishop and apostolic administrator of Banja Luka.

On March 27, 1884 he was appointed apostolic administrator of Banja Luka and Titular Bishop of Danaba.

One month later he came to Banja Luka and in July 1884 he ordered the construction of the cathedral and the bishop's palace.

The bishop did a great job for the Catholic Church in the Diocese of Banja Luka in the next ten years.

During his ministry he founded 13 new parishes: Bosanska Kostajnica, Bosanski Novi, Mahovljani, Prijedor, Prnjavor, Ključ, Zelinovac (Krnjeuša), Novi Martinac, Miljevac, Rakovac, Devetina, Stara Dubrava and Bosanski Petrovac.