约克王朝（英语：House of York）是英格兰的一个王朝，该王朝于15世纪后半叶与兰开斯特王朝争夺王位，其起因在于约克王朝和兰开斯特王朝均是金雀花王朝的旁支，最后这场争夺导致了玫瑰战争。战争命名的原因是两个王朝的家徽上均有一朵玫瑰：约克王朝的是一朵白玫瑰，兰开斯特王朝的是一朵红玫瑰。

约克王朝是1385年创建的，当时爱德华三世的第四个儿子兰利的埃德蒙被封为约克公爵。亨利六世在位时约克公爵三世金雀花的理查提出他应该是真正的英格兰国王。亨利六世是爱德华三世的三子冈特的约翰的孙子，也是兰开斯特王朝的首领。金雀花的理查要求王位的理由是他的舅舅埃德蒙·莫提梅作为爱德华三世次子克拉伦斯公爵莱奥内尔独生女菲利帕的长孙，可能曾被理查二世立为继承人。埃德蒙·莫提梅无子，他死后他的继承权就合理地落到了他姐姐安娜·莫提梅的儿子，即金雀花的理查的头上了，因此他金雀花的理查作为王位继承人比亨利六世更加合理。最后金雀花的理查与亨利达成了一个协议，在这个协议中亨利承认理查的王位合理性，而理查则承认亨利六世是当时的在位国王，他不希望在位国王被废黜，亨利死后约克王朝继承王位。英格兰议会批准了这个协议。

The House of York was a cadet branch of the English royal House of Plantagenet. Three of its members became Kings of England in the late 15th century. The House of York was descended in the male line from Edmund of Langley, 1st Duke of York, the fourth surviving son of Edward III, but also represented Edward's senior line, being cognatic descendants of Lionel, Duke of Clarence, Edward III's second surviving son. It is based on these descents that they claimed the English crown. Compared with the House of Lancaster, it had a senior claim to the throne of England according to cognatic primogeniture but junior claim according to the agnatic primogeniture. The reign of this dynasty ended with the death of Richard III of England in 1485. It became extinct in the male line with the death of Edward Plantagenet, 17th Earl of Warwick in 1499.