第六次十字军东征（1228年-1229年），神圣罗马帝国皇帝腓特烈二世为耶路撒冷第二王国取得耶路撒冷、伯利恒和通往地中海的走廊。

但此次不是战争的直接结果，而是埃及的苏丹Al-Kamil与腓特烈二世缔结了十年和约，并把耶路撒冷、伯利恒和通往地中海的走廊相赠。1229年3月18日，腓特烈二世成为耶路撒冷的国王。

到1244年，花剌子模在埃及支持下重新占领耶路撒冷。

The Sixth Crusade started in 1228 as an attempt to regain Jerusalem. It began seven years after the failure of the Fifth Crusade and involved very little actual fighting. The diplomatic maneuvering of the Holy Roman Emperor, Frederick II, resulted in the Kingdom of Jerusalem regaining some control over Jerusalem for much of the ensuing fifteen years (1229–39, 1241–44) as well as over other areas of the Holy Land.