Kuivastu is a village on the eastern coast of the Estonian island Muhu. Kuivastu Harbour is the primary gateway to the biggest Estonian island Saaremaa (Muhu and Saaremaa are distinct islands, but are connected by a causeway Väinatamm). The corresponding harbour on the continental side is situated in Virtsu. Kuivastu administratively belongs to Muhu Parish of Saare County. In 2000, the village had a population of 73.