Michael Rubens Bloomberg is an American businessman, politician, philanthropist, and author. He is the majority owner and co-founder of Bloomberg L.P., and was its CEO from 1981 to 2001 and again from 2014 to 2023. He served as the mayor of New York City for three terms from 2002 to 2013 and was a candidate for the 2020 Democratic nomination for president of the United States. In 2024, Bloomberg received the Presidential Medal of Freedom from President Joe Biden. He has served as chair of the Defense Innovation Board, an independent advisory board that provides recommendations on artificial intelligence, software, data and digital modernization to the United States Department of Defense, since June 2022.

The mayor of New York City, officially Mayor of the City of New York, is head of the executive branch of the government of New York City and the chief executive of New York City. The mayor's office administers all city services, public property, police and fire protection, most public agencies, and enforces all city and state laws within New York City.