Madura Strait is a stretch of water that separates the Indonesian islands of Java and Madura, in the province of East Java. The islands of Kambing, Giliraja, Genteng, and Ketapang lie in the Strait.
The Suramadu Bridge, the longest in Indonesia, spans the strait between Surabaya on Java and Bangkalan on Madura.
Coordinates: 7°7′40″S 112°40′30″E / 7.12778°S 112.67500°E