The Springfield District Court, presently known as the City Hall Annex, is a historic former courthouse located at 1600 East Columbus Avenue in Springfield, Massachusetts. Constructed between 1929 and 1930 in a civic Classical Revival style, the building was designed by architects E. C. & G. C. Gardner. Originally built as a county courthouse, the structure fulfilled judicial functions until the 1970s. Following its closure as a courthouse, the building was repurposed by the city to accommodate additional municipal government offices. The building was listed on the National Register of Historic Places on February 24, 1983.