The Adrian Public Library is a historic structure located at 110 East Church Street in downtown Adrian, Michigan. Originally used as a library, it was designated as a Michigan Historic Site on December 14, 1976, and later listed on the National Register of Historic Places on December 6, 1977. It is located within the Downtown Adrian Commercial Historic District and adjacent to the Adrian Engine House No. 1. Today, the building houses the Lenawee County Historical Society Museum.