梅加尼西岛是希腊的岛屿，位于爱奥尼亚海，距离莱夫卡斯岛800米，长11公里、宽6公里，面积20平方公里，最高点海拔高度267米，2001年人口1,092。

Meganisi (Greek: Μεγανήσι, literally "big island") is a Greek island and municipality immediately to the east-southeast of the island of Lefkada. The municipality includes the offshore islands of Skorpios (pop. 2 persons) and Sparti. Its total population was 1,041 at the 2011 census.