凤头潜鸭（学名：Aythya fuligula）是一种中等大小的潜鸭，又名泽凫、凤头鸭子、黑头四鸭。　

凤头潜鸭常活动于内陆的河流、池塘和其他开阔水面，夜间栖息于岸边的软泥滩，或者在离岸不远的水面上漂浮，他们喜欢比较清澈的深水环境，在浅水和污染比较严重的水域很难见到他们的身影，凤头潜鸭在陆上活动非常笨拙，亦很少见。其上路活动。迁徙季节和越冬季节常集成大群，与红头潜鸭、青头潜鸭、斑背潜鸭混群。

The Tufted duck (Aythya fuligula) is a small diving duck with a population of close to one million birds. The scientific name is derived from Ancient Greek aithuia an unidentified seabird mentioned by authors including Hesychius and Aristotle, and Latin, fuligo "soot" and gula "throat".