: Home to the Beinecke Rare Book & Manuscript Library , the world's largest building dedicated to preserving rare materials. Its holdings include one of the few surviving Gutenberg Bibles and extensive collections of authors like Sinclair Lewis and Joseph Conrad. 5. University of Toronto Libraries Location : Toronto, Ontario, Canada Size : Approximately 12 to 16 million volumes .

While total volume count is impressive, current trends in library "size" often include digital reach and academic impact. Academic Libraries in the US 2026 Guide - Remitly

You’ve found a list of the largest university libraries in the world—impressive numbers next to names like Harvard, Yale, or Oxford. But before you use that list to compare institutions, it’s crucial to understand what “size” actually means, what it hides, and how to use it wisely.

Consistently ranked as the world's largest academic library, it holds over 20 million volumes and more than 400 million manuscript items . The system includes the iconic Widener Library and over 70 other specialized locations.

In the modern era, "size" is being redefined. While the number of physical volumes remains a point of pride, libraries are now pivoting toward .

- 10 million volumes The University of Michigan Library is one of the largest libraries in the United States, with a collection of over 10 million volumes, including books, journals, and other materials.