The Jokyu Rebellion (jokyu no ran) occurred in the third year of the Jokyu era (A.D. 1221) during the Kamakura period; in this armed conflict, Emperor Gotoba raised troops to attack the Kamakura bakufu (Japanese feudal government headed by a shogun) but was defeated.
承久の乱（じょうきゅうのらん）は、鎌倉時代の承久3年（1221年）に、後鳥羽天皇が鎌倉幕府に対して討幕の兵を挙げて敗れた兵乱である。