Prva Petoletka A.D. (Serbian: Индустрија хидраулике и пнеуматике ПРВА ПЕТОЛЕТКА А.Д. ; Industrija hidraulike i pneumatike) is a Serbian manufacturer of hydraulics and pneumatics. It consists of a parent company which includes one public limited company and 16 enterprises which are organized as joint-stock companies. It maintains production facilities in Trstenik, Vrnjacka Banja, Brus, Aleksandrovac, Novi Pazar, Leposavic, and Belgrade in Serbia and Bijelo Polje in Montenegro. Its headquarters and main production facilities are located in the town of Trstenik.