Marko Miljanov Popović (Serbian Cyrillic: Марко Миљанов Поповић, pronounced [mâːrkɔ mǐʎanɔʋ pɔ̌pɔʋit͡ɕ]; 25 April 1833 – 2 February 1901) was a Brda chieftain and Montenegrin general and writer.

He entered the service of Danilo I, the first secular Prince of Montenegro in the modern era, and led his armed Kuči tribe against the Ottoman Empire in the wars of 1861–62 and 1876–78, distinguishing himself as an able military leader.

For his bravery and successes in raids on Ottoman territory and as a man of confidence, he was awarded in 1862 the position of judge and head of Bratonožići tribe (that neighboured Kuči).

In 1879 the Brda forces under his supreme command were defeated by the Albanian irregulars in the Battle of Novšiće, fought for the territory of Plav and Gusinje.

After a fierce disagreement with Prince Nikola in 1882, he had to leave the State Council and decided to retire from public life to his native Medun.