Cook County Board of Commissioners 11th district is a single-member electoral district for the Cook County Board of Commissioners. Since its inception in 1994, the district has been represented by John P. Daley, a Democrat.

The district was established in 1994, when the board transitioned from holding elections in individual districts, as opposed to the previous practice of having two multi-member districts: one for ten members from the city of Chicago and another for seven members from suburban Cook County.

When the district was first established, it represented parts of the Southwest Side of Chicago and the southwest suburbs of Cook County.

New boundaries were adopted in August 2001, with redistricting taking place following the 2000 United States census.

In regards to townships and equivalent jurisdictions, the district's redistricted boundaries included portions of the city of Chicago and portions of the Stickney and Worth townships.

The district, as redistricted in 2012 following the 2010 United States census, included Bedford Park, Bridgeview, Burbank, Chicago, Evergreen Park, Hometown, and Oak Lawn.

In regards to townships and equivalent jurisdictions, it included portions of the city of Chicago and portions of the Stickney and Worth townships.

The district was 42.59 square miles (27,259.26 acres).