Combating Global Corruption Act of 2023 This bill requires the Department of State to address corruption in foreign governments. The State Department must annually publish a tiered ranking of foreign countries based on their government's efforts to eliminate corruption. The bill outlines the minimum standards that the State Department must consider when creating the ranking, such as whether a country has criminalized corruption, adopted measures to prevent corruption, and complied with the United Nations Convention Against Corruption and other relevant international agreements. Tier one countries meet the standards; tier two countries make some efforts to meet the standards; tier three countries make de minimis or no efforts to meet the standards. If a country is ranked in the second or third tier, the State Department must designate an anti-corruption contact at the U.S. diplomatic post in that country to promote good governance and combat corruption. The State Department must report annually to Congress a list of foreign persons (individuals or entities) (1) who have engaged in significant corruption in a tier three country, and (2) upon whom the President has imposed sanctions pursuant to this bill.