The 18th Ward is one of the 50 aldermanic wards with representation in the City Council of Chicago, Illinois.
From 1965 until 1990, the ward's committeeman was John M. Daley, a second-cousin of the powerful Chicago mayor Richard J. Daley.
Since at least the 1980s, the majority of the Ashburn neighborhood has been located within the ward. As of the 2023-2033 decennial reapportionment of ward boundaries, Ashubrn is located entirely within the 18th ward.
The current alderperson for the 18th ward is Derrick Curtis.
Before 1923, wards were represented by two aldermen.
Since 1923, wards have been represented by a single alderman. Elections have also been nonpartisan, though officeholders often still publicly affiliate with parties.