美国入籍效忠宣誓（Oath of Allegiance, United States）是每个美国永久居民（lawful permanent resident, LPR）希望加入美国国籍时都必须宣誓和签署的官方誓言。
中文翻译：
我谨此宣誓，我完全放弃我对以前所属任何外国亲王、君主、国家或主权之公民资格及忠诚；我将支持及捍卫美利坚合众国宪法和法律、对抗国内和国外所有的敌人；我将真诚地效忠美国；当法律要求时，我愿为保卫美国拿起武器；当法律要求时，我会为美国做非战斗性之军事服务；当法律要求时，我会在政府官员指挥下执行具有国家重要意义的工作。我在此心甘情愿地宣誓，绝无任何心智障碍、借口或保留；请上帝保佑我。
英文原文：
I hereby declare, on oath, that I absolutely and entirely renounce and abjure all allegiance and fidelity to any foreign prince, potentate, state, or sovereignty of whom or which I have heretofore been a subject or citizen; that I will support and defend the Constitution and laws of the United States of America against all enemies, foreign and domestic; that I will bear true faith and allegiance to the same; that I will bear arms on behalf of the United States when required by the law; that I will perform noncombatant service in the Armed Forces of the United States when required by the law; that I will perform work of national importance under civilian direction when required by the law; and that I take this obligation freely without any mental reservation or purpose of evasion; so help me God..
