Springfield Union Station in Springfield, Illinois, is a former train station and now part of the complex of buildings that together form the Abraham Lincoln Presidential Library and Museum. It is listed on the National Register of Historic Places, and is located at 500 East Madison Street in downtown Springfield, adjacent to the Lincoln Presidential Library.

The Abraham Lincoln Presidential Library and Museum documents the life of the 16th U.S. president, Abraham Lincoln, and the course of the American Civil War. Combining traditional scholarship with 21st-century showmanship techniques, the museum ranks as one of the most visited presidential libraries. Its library, in addition to housing an extensive collection on Lincoln, also houses the collection of the Illinois State Historical Library, founded by the state in 1889. The library and museum is located in the state capital of Springfield, Illinois, and is overseen as an agency of state government. It is not affiliated with the U.S. National Archives and its system of libraries.