Marmaris is a port city and a tourist resort on the Mediterranean coast, located in southwest Turkey, in Muğla Province.

Marmaris' main source of income is tourism. Little is left of the sleepy fishing village that Marmaris was just a few decades ago after a construction boom in the 1980s. Marmaris still retains its charm due to its exceptional location between two intersecting set of mountains by the sea. The town's population is 28,660 (2000) and is estimated to make a peak of 300,000 - 400,000 people during the tourism season. Marmaris' nightlife rivals anything on the Turkish coast.

It is also a centre for sailing and diving, possessing two major and several smaller marinas. It is a popular wintering location for hundreds of cruising boaters. It is served by the nearby Dalaman Airport.