A Blue Cruise, also known as a Blue Voyage ("Mavi Yolculuk" in Turkish), is a term used for recreational voyages along the Turkish Riviera, on Turkey's southwestern coast. The term, which is used in Turkey's tourism industry, has its origins in Turkish literature, deriving from the title of a book by Azra Erhat.
The term was first introduced into Turkish literature by a handful of writers, such as Cevat Şakir Kabaağaçlı (alias The Fisherman of Halicarnassus). The author, who had been exiled to Bodrum in 1925, fell in love with the beauty of the local landscape, with its fishing villages and sponge divers. He began taking trips with his intellectual friends on the sponge divers' sailing boats, called gulets. These excursions became known as "Blue Cruises". Author Sabahattin Eyüboğlu (together with his circle of family and friends) participated in Blue Cruises,  as did Azra Erhat. Those who united around the literary revue "Yeni Ufuklar" (New Horizons) in the 1950s and 1960s have also contributed to the popularity of the Blue Cruise, and guidebooks have been published in Turkish  and German.
Quite popular among tourists from various parts of the world, particularly tourists from Italy, a full Blue Cruise generally starts in Didim or Kuşadası, although tours may also depart from Bodrum or Marmaris. They usually terminate at the port of Antalya.
"Carian Cruise" is the term used as a synonym by a number of sources internationally, by the name of much of the same region of south-west Turkey in ancient times:Caria. This term generally defines the starting point and terminus of the tours with more precision, with Bodrum as departure point, and its coverage of the whole coastline to Antalya will actually also include the region known in ancient times as Lycia.