Kosti (also Kusti, Arabic: كوستي) is one of the major cities in Sudan that lies south of Khartoum, the capital of Sudan, and stands on the western bank of the White Nile river opposite Rabak, the capital of the White Nile state and is connected to it by a bridge.

Kosti was founded shortly after 1899 by the Greek merchant Konstantinos "Kostas" Mourikis, who arrived in Sudan along with his brother following the Anglo-Egyptian victory over the indigenous Mahdist state.

[2] He set up a store on the White Nile, where pilgrims from West Africa to Mecca and Southern trade routes crossed.

The settlement soon grew to a town and was named after "Kostas", illustrating the important role played by the Greeks in Sudan, especially in the field of trade.

[3] The large Kenana sugar refinery is located in Rabak east of the city.