Cundy's Harbor Library is a small, well-stocked public library serving the residents of Harpswell, Maine, particularly those living in Cundy's Harbor and on Great Island. The library's mission is to offer community members of all ages a collection of popular books, videos, and audio tapes, with a special interest in Maine histories and authors. It provides access to technology with a computer for patron use that allows access to the Internet. The library serves as a meeting place for community groups and activities and is a central point of information dissemination.

Wireless Internet service is available in the library.

A Notary Public is available whenever the library is open.