Boluk-bashi (Turkish: bölükbaşı) was an Ottoman officer rank equivalent to captain (see Military of the Ottoman Empire). The holder was in command of a bölük, a sub-division of a regiment. It was higher than oda-bashi (lieutenant).
It was adopted by the Serbian hajduks and into the Serbian Revolutionary Army as buljubaša (Serbian Cyrillic: буљубаша).
People such as Janko Gagić, Arsenije Loma, Zeka Buljubaša, Veljko Petrović and Petar Dobrnjac had the rank of buljubaša in the prelude and during the Serbian Revolution.