Marijan Oblak (December 8, 1919 in Veli Rat, Dugi otok – February 15, 2008 in Zadar) was a Croatian archbishop of the Archdiocese of Zadar in the Catholic Church.
He was ordained a priest on August 5, 1945 in Å ibenik.
From 1945 to 1949, he was prefect in the diocesan children's seminary in Å ibenik, as well as a teacher at a state gymnasium.
From 1949 to 1951 he was prefect of the archdiocese's seminary Zmajevic in Zadar.
From 1955 to 1958 he served as vice-rector of the seminary.
He was named auxiliary bishop of Zadar on April 30, 1958 and was ordained a bishop of a titular see on July 6 of the same year in the Cathedral of St.
Anastasia.
He was made archbishop on August 29, 1969.
He served in this position until February 2, 1996.