Bolivar Free Library is a historic Carnegie library building located at Bolivar in Allegany County, New York. It is one of 3,000 such libraries constructed between 1885 and 1919. Carnegie provided $5,000 toward the construction of the Bolivar Free Library. It is a 48-by-32-foot (14.6 by 9.8 m), Mission style structure constructed 1910–1911.

It was listed on the National Register of Historic Places in 2003.