Marmaris is a port town and tourist resort on the Mediterranean coast, located in Muğla Province, southwest Turkey, along the shoreline of the Turkish Riviera.

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 sets of mountains by the sea. The town's population was 30,957 in 2010 and peaks at around 300,000 to 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.

Marmaris has a Mediterranean climate characterised by a hot and humid summer and cool, rainy winter. Showers and rain are very unlikely between May and October.

Summers are hot and humid, and temperatures can reach over 40°C sometimes during heatwaves in July and August. October is still warm and bright, though with spells of rain, and many tourists prefer to visit in the early autumn, especially in September, because the temperatures are not as hot.