AGOA Extension Act of 2023 This bill extends through September 30, 2045, the duty-free treatment of the products of beneficiary sub-Saharan African countries under the Trade Act of 1974 and the African Growth and Opportunity Act. The extended period also applies to the preferential treatment of apparel articles wholly assembled, or components knit-to-shape and wholly assembled, in one or more beneficiary sub-Saharan African countries from yarns originating in the United States or one or more beneficiary sub-Saharan African countries or former beneficiary sub-Saharan African countries, or both; and the third-country fabric program granting duty-free treatment of apparel articles wholly assembled, or knit-to-shape and wholly assembled, or both, in one or more lesser developed beneficiary sub-Saharan African countries, regardless of the country of origin of the fabric or the yarn used to make such articles.