Of (Turkish: [of], possibly from Ancient Greek: Ὄφιούς Ophious) is a municipality and district of Trabzon Province, Turkey.

[5] The Ophius stream - which snakes (zigzags) its way from around 3300 meters altitude in the Pontic Mountains towards the coastal town of Of - was renamed as "Solaklı" during the 1950s Turkification process which is a common policy in all of Turkey.

Mixed farming settlements of Pontic Greeks were established along most bends of the river at least from the Middle Ages onwards, making it one of the most densely settled valley-systems on the southern coast of the Black Sea.

During that time many Christians began retreating to the upper valley highlands away from areas showing an increase in Muslim presence.

The settlements inhabited by Orthodox Christian Greeks were Halt (Sogutlu), Zourel (Sarakoy), Kourits (Sivrice), Krinita (Catalsogut), Kofkia (Yaniktas), Giga (Yiga), Zisino (Bolumlu) and Leka (Camli).