Arianna Huffington (born Arianna Stasinopoulos (Greek: Αριάννα Στασινόπουλος)) is a Greek American author and syndicated columnist. She is best known as co-founder of the news website The Huffington Post. A popular conservative commentator in the mid-1990s, she adopted more liberal political beliefs in the late 1990s. She is the ex-wife of former Republican congressman Michael Huffington.

In 2003, she ran as an independent candidate for Governor in the California recall election.