Dejan Manjak (, 1333) was a nobleman in the service of Serbian King Stefan Duà ¡an, only mentioned in a charter dated January 22, 1333, in which Stefan Duà ¡an officially sold Ston and Prevlaka to the Republic of Venice. Based on the order in which the witnesses appear, vojvoda Dejan was of lower rank than stavilac Miloà ¡.
K. J. JireÃÂek suggested that Dejan Manjak was the same person as Dejan, the sevastokrator of Duà ¡an.
According to two fresco compositions dated between 1332 and 1337 in the KuÃÂevià ¡te Monastery, in the narthex, on the northern and southern wall, Dejan had a wife, Vladislava, and two sons, Jovan and Dmitar. Dejan is depicted on the southern wall with his wife standing next to Stefan Duà ¡an and his wife Jelena.