《英爱条约》（英语：Anglo-Irish Treaty；爱尔兰语：An Conradh Angla-Éireannach），是英国与爱尔兰代表于1921年签订的划分爱尔兰岛归属的条约。

第一次世界大战结束后，原属英国的爱尔兰争取独立的斗争更加高涨。新芬党在都柏林召开国民议会，发表独立宣言，宣布成立共和国，并开展游击战争。1921年夏，英国自由党的大卫·劳合·乔治政府被迫与爱尔兰签订停战协定。1921年7月双方在伦敦开始谈判，与新芬党谈判代表阿瑟·格里菲斯和迈克尔·柯林斯于12月6日签订此约。

条约的主要内容是：把原先统一的爱尔兰岛分割为两部分，南部26郡，成立爱尔兰自由邦；北部6郡（现北爱尔兰），则划归英国。自由邦名义上享有自治自决的全权。但其对外政策和一部分内政仍置于英国监督之下。自由邦必须效忠英王，议会通过的法律，需经英国总督批准方能生效。

The Anglo-Irish Treaty (Irish:An Conradh Angla-Éireannach), commonly known as The Treaty and officially the Articles of Agreement for a Treaty Between Great Britain and Ireland, was an agreement between the government of the United Kingdom of Great Britain and Ireland and Irish representatives that concluded the Irish War of Independence. It provided for the establishment of the Irish Free State within a year as a self-governing dominion within the British Commonwealth of Nations (the first use by the UK government of this term, rather than "British Empire", in an official document). It also provided Northern Ireland, which had been created by the Government of Ireland Act 1920, an option to opt out of the Irish Free State, which it exercised.