The 16th congressional district of Illinois is represented by Republican Darin LaHood. Prominent past representatives from the 16th district have included Everett Dirksen, who went on to become the Republican leader in the United States Senate; John B. Anderson, who became the 3rd highest ranking Republican in the House and went on to run as a major independent candidate in the 1980 Presidential election; and Lynn Martin, who later served as United States Secretary of Labor.

Darin McKay LaHood is an American attorney and politician who has served as a U.S. representative from Illinois since 2015. A member of the Republican Party, LaHood has represented the 16th district since 2023, and previously represented the 18th district from 2015 to 2023. He previously served in the Illinois Senate from the 37th legislative district from 2011 to 2015, before being elected to Congress in a special election following the resignation of Aaron Schock.