Tuzla Spit or Kosa Tuzla (Russian: Тузлинская коса, Коса Тузла, Ukrainian: Коса Тузла)[1] was a long narrow peninsula or sandy spit in the eastern part of the Strait of Kerch which extended from Cape Tuzla [ru][2] to the north-west in the direction of the city Kerch for almost 11 kilometres (6.8 mi).

In 1925, the spit was cut by a storm, forming Tuzla Island.

The open-water channel between Tuzla Island and the Russian mainland where the spit had previously existed reached over a kilometer in width.

The two small islands were re-connected to each other by the 2003 construction by Russia of the 4.1 km long Tuzla dam (45°14′39″N 36°35′31″E / 45.24417°N 36.59194°E / 45.24417; 36.59194).

The remnants of the Tuzla Spit were utilized in the building of the Crimean Bridge.