"AOC" can refer to several things depending on the context, but the most common and prominent meaning today is Alexandria Ocasio-Cortez. She is an American politician and activist who has served since 2019 as the U.S. Representative for New York's 14th congressional district. AOC is a member of the Democratic Party and is known for her progressive policies, social media presence, and activism. She is the youngest woman ever elected to Congress and is associated with initiatives like the Green New Deal and policies supporting worker cooperatives, Medicare for All, and tuition-free public colleges. Besides this, the acronym "AOC" can also stand for administrative or governmental terms such as Administrative Order on Consent (related to environmental regulation), Administrative Office of the Courts (in Washington State), or Architect of the Capitol, which manages the U.S. Capitol complex.

In summary, in contemporary politics, "AOC" primarily refers to Alexandria Ocasio-Cortez, a young and influential progressive Congresswoman from New York.