Väike Siimurahu is a small uninhabited island in the Baltic Sea belonging to the country of Estonia.
Väike Siimurahu lies off of the western coast of Estonia in the Väinameri Strait, north of the island Siimurahu and just off of the Sassi peninsula on the Estonian mainland, covering an area of 2.177 ha, with a circumference of 0.56 km.[1] It is administered by the mainland village of Puise in Ridala Parish, Lääne County.[2] Other nearby islands include Tagarahu, Paljarahu, Esirahu and Mustarahu.[3]