Supetar is a town on the northern side of the Dalmatian island of Brac, in the Split-Dalmatia County, in Croatia. It became the island's official centre in 1827. The Town of Supetar includes Supetar itself and the three villages: Splitska, Škrip and Mirca.

With a population of 3,213, it is the island's largest town. It is accessible by ferry (Jadrolinija, the ferry ride from the mainland city of Split takes 45 minutes) or via Brac Airport which is located 30 kilometres to the southeast.

The Parish church of St. Peter (Sveti Petar) stands on the side of an old chapel which was restored in 1773 in a Baroque architectural style. At that time it also received a new aisle and bell tower. It was extended in 1887. In the church there are paintings by the local artist Feliks Tironi from the second half of the 18th century and a Baroque altarpiece by an unknown Venetian artist of the 18th century.

In the old part of the church there are some gravestones with Croatian inscriptions and at the entrance to the church there is a font made of two large Gothic capitals. On the left of the church building there is a sundial and beneath it a sarcophagus with the date 1774 engraved. In the Sunday school classrooms there are paintings from the Venetian era (16th and 17th centuries). The well, decorated with reliefs, is the work of Johannes Mazzonius from 1734.

Supetar graveyard beside the Chapel St. Nicholas (Sveti Nikola Putnik) there are two old Christian sarcophagi and several gravestones (Pieta), which are the work of Ivan Rendic of Supetar (1849-1932), and the mausoleum of the Petrinovic family with portraits and sculptures, by the sculptor Toma Rosandic (1878-1958).