The secretary of state of Illinois is one of the six elected executive state offices of the government of Illinois, and one of the 47 secretaries of state in the United States. The Illinois secretary of state keeps the state records, laws, library, and archives, and is the state's corporation registration, vehicle registration and driver licensing authority. The current secretary of state is Alexi Giannoulias, a Democrat who took office in 2023.

Alexander Giannoulias is an American financier and politician who is the Secretary of State of Illinois. He previously served as the 72nd Illinois Treasurer from 2007 to 2011.