The Conant Public Library is the public library of Winchester, New Hampshire. It is located at 111 Main Street, in a fine Victorian Romanesque Revival building erected in 1891, funded by a bequest from Winchester resident Ezra Conant. The building's design, by Springfield, Massachusetts architect, J. M. Currier, is based on his design of the 1886 library building in Brattleboro, Vermont, and is one of the most architecturally distinguished buildings in Cheshire County. It was listed on the National Register of Historic Places in 1987.