Chetham's Library is a historic library in Manchester, England, established in 1653 and housed in the oldest public building in Manchester, Chetham's Hospital. It is open to the public free of charge and is considered one of the treasures of the city. The library houses a collection of over 100,000 books, including an impressive collection of early printed books and manuscripts dating back to the medieval period.

The library's most famous item is a rare first edition copy of the poem "Paradise Lost" by John Milton. Other notable items in the collection include works by Shakespeare, Thomas More, and Thomas Paine. The library also has a number of musical manuscripts and other historical documents, as well as an extensive archive of materials relating to Manchester's social and cultural history.

Chetham's Library is also known for its beautiful architecture and peaceful atmosphere, making it a popular spot for visitors and researchers alike. It has been used as a location for films and television shows, including "The Peaky Blinders" and "The Crown." The library also hosts regular events and exhibitions, including talks, concerts, and workshops, showcasing its collection and promoting education and cultural heritage.