Jesup Memorial Library is the public library of Bar Harbor, Maine. It is located in an architecturally distinguished Colonial Revival building at 34 Mount Desert Street in the town's main village. The building was built in 1910-11, donated to the community by Mrs. Morris K. Jesup in memory of her late husband, both of them longtime summer residents of the area, and was listed on the National Register of Historic Places in 1991 for its architecture.