美洲拟鲽（学名Pseudopleuronectes americanus）是鲽科下的一种比目鱼。它们原产于由加拿大拉布拉多至美国格鲁吉亚州的西北大西洋海岸。它们是由纽芬兰至马萨诸塞州湾（Massachusetts Bay）的海域中最为普遍的近岸比目鱼。它们夏天会生活在离岸的深水区，冬天就会游到近岸的浅水区，如河口、河流及海湾。

美洲拟鲽可长达64厘米及重3.6公斤。它们与大西洋牙鲆不同之处是其眼睛位于身体的右侧及没有牙齿。它们的肉质美味。

于1991年，美洲拟鲽的基因被用作发明转基因的蕃茄。这种基因可以编出一种能抵受低温的蛋白质，以减低因结霜所造成的破坏。

The winter flounder, Pseudopleuronectes americanus, (also known as black back) is a right-eyed ("dextral") flatfish of the family Pleuronectidae. It is native to coastal waters of the western north Atlantic coast, from Labrador, Canada to Georgia, United States, although it is less common south of Delaware Bay. It is the most common near-shore (shallow-water) flounder in the waters from Newfoundland down through Massachusetts Bay, reaching a maximum size around 61 cm in length and 2.25 kg in weight. The species grows larger on Georges Bank, where they can reach a length of 70 cm and weight of 3.6 kg. Although winter flounder historically supported large commercial and recreational fisheries, biomass and landings have decreased since the 1980s.