Ottokar II (; c. 1233 – 26 August 1278), the Iron and Golden King, was a member of the Premyslid dynasty who reigned as King of Bohemia from 1253 until 1278. He also held the titles of a Duke of Austria from 1251, Duke of Styria from 1260, as well as Duke of Carinthia and Margrave of Carniola from 1269.