Betina is a village located on the Croatian island of Murter, seven km from Tisno, where a drawbridge connects the island and the mainland. The largest of the Šibenik archipelago islands, and the closest to the mainland, it has been populated since the time of the Illyrians (tribe of Liburns). Remains of the Roman settlement of Colentum as well as many ruins of Roman villas, murals, and mosaic testify to its occupation during the period of the Roman Empire.
The island of Murter encompasses 17.9 km² (with nearby islands 25.6 km².) The island was first mentioned by Scardon in memorials of Ptolemy. It was probably first named Srimač in 1251. When King Bela arrived in Dalmatia and in Klobučac near Trogir, he issued a deed of donation which details the borders of Šibenik. The island of Srimač was mentioned as a part of Šibenik.