The Iowa Masonic Library and Museum, located in Cedar Rapids, Iowa, United States, is one of the largest Masonic libraries in the world and incorporates at least three museum collections.

In its earliest years the Library was located at the residence of Theodore S. Parvin, the first Grand Librarian, who started it with 100 books purchased for $5.

[4] According to Professor David Hackett of the University of Florida "a fairly large...public collection of Prince Hall materials can be found" at the library.

[5] Likewise, Stephen Kantrowitz of the University of Wisconsin-Madison notes that "substantial collections of published black Masonic proceedings" appearing in large numbers from the 1870s on can be found at the library.

[6] According to Kantrowitz, only the Scottish Rite Masonic Museum & Library in Lexington, Massachusetts and the Livingston Library at the Grand Lodge of New York have a similar volume of Prince Hall Masonic material.

One of the more interesting artifacts is a Civil War flag, which served as standard for the Iowa regiment in the Battle of Champion Hill, where 97 Iowans were casualties.

[12] It is a contributing building in the Grant Wood Cultural District, certified in 2010 by the Iowa State Historical Society.