A small uninhabited island lying off the south coast of South Harris in the Outer Hebrides, Vallay (Gael: Bhalaigh) is located a quarter-mile (0.5 km) southeast of Rodel and a half-mile (1 km) northeast of Renish Point. Vallay reaches a height of 30m (98 feet) above sea level and is connected to the smaller island of Flodday to the northwest.