The Ryerson Building is the older wing of the main public library in Grand Rapids, Michigan, United States.

The Ryerson Building was the first permanent home of the Grand Rapids Library.

Andrew Carnegie pledged $150,000 to support the new building, but the building was named for its other donor, Martin A. Ryerson, who was a Grand Rapids native.

[1] In 1967, the library more than doubled in size with the addition of the Keeler wing.

[citation needed] The building was opened in October 1904, and was extensively renovated for its centenary year.