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.^[1] It was higher than oda-bashi (lieutenant).

In the Royal Corps of Colonial Troops of the Italian Royal Army, it was known as bulucbasci and was the equivalent to the rank of sergeant.

It was adopted by the Serbian hajduks and into the Serbian Revolutionary Army as buljubaša (Serbian Cyrillic: буљубаша) or buljukbaša (буљукбаша).

People such as Janko Gagić, Arsenije Loma, Konda Bimbaša, Zeka Buljubaša, Veljko Petrović and Petar Dobrnjac had the rank of buljubaša in the prelude and during the Serbian Revolution.

• Rıza Tevfik Bölükbaşı, Turkish philosopher
• Zerrin Bölükbaşı, Turkish sculptor
• Iliaș Colceag (fl. 1710–1743), Moldavian
• Abdul Bölükbaşı (fl. 1821), Tripolitsa
• Yahya bey Dukagjini (1498–1582), Albanian

• Bölükbaşı (surname)
• Buljubašić