The Interlaken Lakeside Reserve is a wetland reserve at subalpine Interlaken, lying at the north-western end of Lake Crescent on the Interlaken isthmus between the reservoirs of Lakes Sorell and Crescent, about 20 km west of Tunbridge, in the Central Highlands of Tasmania, Australia. In 1982 it was designated a wetland of international importance under the Ramsar Convention.