Travunia was a South Slavic medieval principality that was part of Medieval Serbia (850–1371), and later the Medieval Bosnia (1373–1482). The principality became hereditary in a number of noble houses, often kin to the ruling dynasty. The region came under Ottoman rule in 1482. Its seat was in the city of Trebinje.

The medieval period in the history of Serbia began in the 6th century with the Slavic migrations to Southeastern Europe, and lasted until the Ottoman conquest of Serbian lands in the second half of the 15th century. The period is also extended to 1537, when Pavle Bakić, the last titular Despot of Serbia in Hungarian exile, fell in the Battle of Gorjani.