St. John's Block Commercial Exchange is a Richardsonian Romanesque building in Grand Forks, North Dakota, United States.

It is a five-story brick and ashlar building, built during 1890–1891.

[1] It was listed on the National Register of Historic Places (NRHP) in 1982.

[3] It was included in a 1981 study of Downtown Grand Forks historical resources that led to a large number of NRHP listings.

This article about a property in North Dakota on the National Register of Historic Places is a stub.