Grdan (Serbian Cyrillic: Грдан; fl. 1596–d. 1612) was the vojvoda (duke) of the Nikšić nahija, part of the Sanjak of Herzegovina (Ottoman Empire), who led several uprisings against the Ottomans in between 1596 and 1612, alongside Serbian Patriarch Jovan Kantul (s. 1592–1614).