孔雀岛（德语：Pfaueninsel）是位于德国柏林西南部哈弗尔河中的一个岛屿，邻近勃兰登堡州城市波茨坦。岛上的宫殿作为波茨坦和柏林的宫殿群及公园群的一部分被划入世界文化遗产。同时孔雀岛也是欧盟指定的野鸟保护区。

Pfaueninsel ("Peacock Island") is an island in the River Havel situated in Berlin-Wannsee, in southwestern Berlin, near the border with Potsdam and Brandenburg. The island is part of the Palaces and Parks of Potsdam and Berlin UNESCO World Heritage Site and a popular destination for day-trippers. Pfaueninsel is also a nature reserve in accordance with the EU Habitats Directive and a Special Protection Area for wild birds.