板龙属（拉丁属名：Plateosaurus）是蜥臀目蜥脚形亚目植食性恐龙的一属。板龙生存于晚三叠纪诺利阶到瑞提阶的欧洲，约2亿1600万年前到1亿9900万年前。目前已有两个已承认种：恩氏板龙（P. engelhardti）与长头板龙（P. longiceps），过去曾经还有其他的种，但已被归类于其他属。

板龙的化石发现于1834年，并在1837年被叙述，牠们是最早被命名的恐龙之一，但不包含在最早用来定义为恐龙总目的三个属之中，因为当时对于板龙的了解有限。

板龙是体积庞大的二足、草食性恐龙，拥有小头部、长颈部、用来压碎植物的锐利牙齿、强壮的四肢、以及大型拇趾尖爪，这些尖爪可能用来防卫与帮助进食。

Plateosaurus (probably meaning "broad lizard", often mistranslated as "flat lizard") is a genus of plateosaurid dinosaur that lived during the Late Triassic period, around 214 to 204 million years ago, in what is now Central and Northern Europe. Plateosaurus is a basal (early) sauropodomorph dinosaur, a so-called "prosauropod". As of 2011, two species are recognized: the type species P. engelhardti from the late Norian and Rhaetian, and the slightly earlier P. gracilis from the lower Norian. However, others have been assigned in the past, and there is no broad consensus on the species taxonomy of plateosaurid dinosaurs. Similarly, there are a plethora of synonyms (invalid duplicate names) at the genus level.