The Anadolu Agency say the fiberglass boat capsized early on Friday off the Bodrum peninsula, a popular visitor destination. The migrants were trying to reach the island of Kos.
Separately, the agency said 11 migrants were rescued by crew members and tourists aboard a yacht off the nearby coast of Datca, after their rubber boat sank on its way to Kos.
The route between Bodrum and Kos is one of the shortest to the Greek islands. Thousands of migrants are attempting the perilous sea crossing despite the risks.