Mardarije Kornečanin (Serbian Cyrillic: Мардарије Корнечанин; fl. 1625–59) was an Eastern Orthodox bishop in Montenegro and Primorje, serving as the Metropolitan of Cetinje from 1637 to 1659, under the jurisdiction of the Serbian Patriarchate of Peć. After 1640, he entered into negotiations with the Catholic Church, hoping to achieve political and military support through Church Union. He succeeded Metropolitan Rufim Njeguš, and was succeeded by Rufim Boljević.