Krajina Belojević (Serbian: Крајина, Greek: Κράινα) was the župan of Travunia, an administrative unit of the Principality of Serbia, in the 9th century. In 847/848, not long after the three-year Bulgarian–Serbian War (839–842) in which Prince Vlastimir of Serbia (r. ca. 836-850) defeated the Bulgar army sent by Presian I, Krajina married the daughter of Prince Vlastimir and gained a raising in rank, and was entitled the županate centered on Trebinje (a province in the "maritime", Pomorje, part of modern Herzegovina), which had earlier been held by Krajina's father, the local lord Beloje. His father-in-law was the eponymous founder of the Vlastimirović dynasty, which would rule Serbia until 969. Krajina continued the office under Mutimir (r. 850–891). With the unnamed daughter of Vlastimir,