The Warren Public Library is the public library of Warren, Massachusetts, It is located at 934 Main Street, in a Richardsonial Romanesque building designed by Amos P. Cutting and built in 1889.

Courses of granite are periodically interspersed with bands of brownstone that extend across and around the building.

[2] The original building plan called for the upstairs to be used as a meeting hall for lectures and civic events.

It was instead decided to use space there for a museum, and display cases were purchased at an early date to fulfil this role.

The stacks were eventually expanded into the space as well, but it was closed off during World War II as an energy conservation measure, and not reopened until 2001.