《美利堅合眾國憲法》第二十二修正案(英語:Twenty-second Amendment to the United States Constitution)簡稱「第二十二修正案」(Amendment XXII),规定了美国总统的任期制。该修正案于1947年3月21日由美国国会批准提交各州認可,并于1951年2月27日得到足夠数量的州批准而生效。
Section 1. No person shall be elected to the office of the President more than twice, and no person who has held the office of President, or acted as President, for more than two years of a term to which some other person was elected President shall be elected to the office of President more than once. But this Article shall not apply to any person holding the office of President when this Article was proposed by Congress, and shall not prevent any person who may be holding the office of President, or acting as President, during the term within which this Article becomes operative from holding the office of President or acting as President during the remainder of such term.
Section 2. This article shall be inoperative unless it shall have been ratified as an amendment to the Constitution by the legislatures of three-fourths of the several States within seven years from the date of its submission to the States by the Congress.