The Downtown Rock Island Historic District is a national historic district encompassing 82.3 acres (33.3 ha) in downtown Rock Island, Illinois.

The majority of the buildings in the district are commercial buildings, as downtown Rock Island has historically been the city's commercial center; these include several building types, mainly one-part and two-part commercial blocks, designed in a wide variety of the architectural styles popular in the late nineteenth and early to mid twentieth centuries.

Several of Rock Island's major government buildings, including the city hall and old county courthouse, are also part of the district.

[2] The district was added to the National Register of Historic Places on March 13, 2020.

This article about a property in Rock Island County, Illinois on the National Register of Historic Places is a stub.