The Kadıköy İnciburnu Feneri is a lighthouse located at the head of Kadıköy Harbor's İnciburnu Breakwater on the Anatolian coast of Bosporus' south entrance, in Kadıköy district of Istanbul, Turkey. It is across from the Ahırkapı Feneri, which is on the Rumelian coast of the strait at a distance of 1.5 nmi. A line connecting the two lighthouses marks the southern boundary of the Port of Istanbul.